diff --git a/test/porousmediumflow/1pnc/implicit/CMakeLists.txt b/test/porousmediumflow/1pnc/implicit/CMakeLists.txt
index 6d3ff5ea1719846559e97e08e88a0875e2856f05..bbba4c96472aeb49ac89102cc71ed7b5bc7ec0f6 100644
--- a/test/porousmediumflow/1pnc/implicit/CMakeLists.txt
+++ b/test/porousmediumflow/1pnc/implicit/CMakeLists.txt
@@ -8,7 +8,7 @@ dune_add_test(NAME test_1p2c_box
                         --files ${CMAKE_SOURCE_DIR}/test/references/outflowbox-reference.vtu
                                 ${CMAKE_CURRENT_BINARY_DIR}/1pnctestbox-00009.vtu
                         --command "${CMAKE_CURRENT_BINARY_DIR}/test_1p2c_box test_1p2c_fv.input -Problem.Name 1pnctestbox"
-                        --zeroThreshold {"velocity_w \(m/s\)_1":1e-15})
+                        --zeroThreshold {"velocity_Water \(m/s\)_1":1e-15})
 
 dune_add_test(NAME test_1p2c_tpfa
               SOURCES test_1p2c_fv.cc
@@ -18,7 +18,7 @@ dune_add_test(NAME test_1p2c_tpfa
                         --files ${CMAKE_SOURCE_DIR}/test/references/1p2ctestcc-reference.vtu
                                 ${CMAKE_CURRENT_BINARY_DIR}/1pnctest_tpfa-00009.vtu
                         --command "${CMAKE_CURRENT_BINARY_DIR}/test_1p2c_tpfa test_1p2c_fv.input -Problem.Name 1pnctest_tpfa"
-                        --zeroThreshold {"velocity_w \(m/s\)_1":1e-15})
+                        --zeroThreshold {"velocity_Water \(m/s\)_1":1e-15})
 
 #Note: The mpfa model does not support velocity output yet. We therefore deactivate it for the test and use a copy of the tpfa reference
 #      solution where the velocities have been removed.
@@ -51,7 +51,7 @@ dune_add_test(NAME test_1p2cni_conduction_box
                         --files ${CMAKE_SOURCE_DIR}/test/references/1p2cniboxconduction-reference.vtu
                                 ${CMAKE_CURRENT_BINARY_DIR}/1p2cni_conductiontest_box-00005.vtu
                         --command "${CMAKE_CURRENT_BINARY_DIR}/test_1p2cni_conduction_box test_1p2cni_conduction_fv.input -Problem.Name 1p2cni_conductiontest_box"
-                        --zeroThreshold {"velocity_w \(m/s\)":1e-9})
+                        --zeroThreshold {"velocity_Water \(m/s\)":1e-9})
 
 dune_add_test(NAME test_1p2cni_conduction_tpfa
               SOURCES test_1p2cni_conduction_fv.cc
@@ -61,7 +61,7 @@ dune_add_test(NAME test_1p2cni_conduction_tpfa
                         --files ${CMAKE_SOURCE_DIR}/test/references/1p2cniccconduction-reference.vtu
                                 ${CMAKE_CURRENT_BINARY_DIR}/1p2cni_conductiontest_tpfa-00005.vtu
                         --command "${CMAKE_CURRENT_BINARY_DIR}/test_1p2cni_conduction_tpfa test_1p2cni_conduction_fv.input -Problem.Name 1p2cni_conductiontest_tpfa"
-                        --zeroThreshold {"velocity_w \(m/s\)_0":1e-9})
+                        --zeroThreshold {"velocity_Water \(m/s\)_0":1e-9})
 
 #Note: The mpfa model does not support velocity output yet. We therefore deactivate it for the test and use a copy of the tpfa reference
 #      solution where the velocities have been removed.
@@ -83,7 +83,7 @@ dune_add_test(NAME test_1p2cni_convection_box
                         --files ${CMAKE_SOURCE_DIR}/test/references/1p2cniboxconvection-reference.vtu
                                 ${CMAKE_CURRENT_BINARY_DIR}/1p2cni_convectiontest_box-00009.vtu
                         --command "${CMAKE_CURRENT_BINARY_DIR}/test_1p2cni_convection_box test_1p2cni_convection_fv.input -Problem.Name 1p2cni_convectiontest_box"
-                        --zeroThreshold {"velocity_w \(m/s\)":1e-9})
+                        --zeroThreshold {"velocity_Water \(m/s\)":1e-9})
 
 dune_add_test(NAME test_1p2cni_convection_tpfa
               SOURCES test_1p2cni_convection_fv.cc
@@ -93,7 +93,7 @@ dune_add_test(NAME test_1p2cni_convection_tpfa
                         --files ${CMAKE_SOURCE_DIR}/test/references/1p2cniccconvection-reference.vtu
                                 ${CMAKE_CURRENT_BINARY_DIR}/1p2cni_convectiontest_tpfa-00009.vtu
                         --command "${CMAKE_CURRENT_BINARY_DIR}/test_1p2cni_convection_tpfa test_1p2cni_convection_fv.input -Problem.Name 1p2cni_convectiontest_tpfa"
-                        --zeroThreshold {"velocity_w \(m/s\)_0":1e-9})
+                        --zeroThreshold {"velocity_Water \(m/s\)_0":1e-9})
 
 #Note: The mpfa model does not support velocity output yet. We therefore deactivate it for the test and use a copy of the tpfa reference
 #      solution where the velocities have been removed.
diff --git a/test/porousmediumflow/3p/implicit/CMakeLists.txt b/test/porousmediumflow/3p/implicit/CMakeLists.txt
index 7001201af3e570a2e474b6c0d892438c4e001ae2..5b4774d9edc346f7808e0673e5aaa75a63dd7787 100644
--- a/test/porousmediumflow/3p/implicit/CMakeLists.txt
+++ b/test/porousmediumflow/3p/implicit/CMakeLists.txt
@@ -28,7 +28,7 @@ dune_add_test(NAME test_box3pniconvection
                             --files ${CMAKE_SOURCE_DIR}/test/references/3pniconvectionbox-reference.vtu
                             ${CMAKE_CURRENT_BINARY_DIR}/test_box3pniconvection-00009.vtu
                             --command "${CMAKE_CURRENT_BINARY_DIR}/test_box3pniconvection test_3pni_fv_convection.input -Problem.Name test_box3pniconvection"
-                            --zeroThreshold {"velocity_w \(m/s\)_1":1e-8})
+                            --zeroThreshold {"velocity_Water \(m/s\)_1":1e-8})
 
 dune_add_test(NAME test_cc3pniconvection
               SOURCES test_3pni_fv_convection.cc
@@ -38,7 +38,7 @@ dune_add_test(NAME test_cc3pniconvection
                             --files ${CMAKE_SOURCE_DIR}/test/references/3pniconvectioncc-reference.vtu
                             ${CMAKE_CURRENT_BINARY_DIR}/test_cc3pniconvection-00009.vtu
                             --command "${CMAKE_CURRENT_BINARY_DIR}/test_cc3pniconvection test_3pni_fv_convection.input -Problem.Name test_cc3pniconvection"
-                            --zeroThreshold {"velocity_w \(m/s\)_1":1e-8})
+                            --zeroThreshold {"velocity_Water \(m/s\)_1":1e-8})
 
 dune_add_test(NAME test_box3pniconduction
               SOURCES test_3pni_fv_conduction.cc
@@ -48,7 +48,7 @@ dune_add_test(NAME test_box3pniconduction
                             --files ${CMAKE_SOURCE_DIR}/test/references/3pniconductionbox-reference.vtu
                             ${CMAKE_CURRENT_BINARY_DIR}/test_box3pniconduction-00005.vtu
                             --command "${CMAKE_CURRENT_BINARY_DIR}/test_box3pniconduction test_3pni_fv_conduction.input -Problem.Name test_box3pniconduction"
-                            --zeroThreshold {"velocity_w \(m/s\)_1":1e-8})
+                            --zeroThreshold {"velocity_Water \(m/s\)_1":1e-8})
 
 dune_add_test(NAME test_cc3pniconduction
               SOURCES test_3pni_fv_conduction.cc
@@ -58,7 +58,7 @@ dune_add_test(NAME test_cc3pniconduction
                             --files ${CMAKE_SOURCE_DIR}/test/references/3pniconductioncc-reference.vtu
                             ${CMAKE_CURRENT_BINARY_DIR}/test_cc3pniconduction-00005.vtu
                             --command "${CMAKE_CURRENT_BINARY_DIR}/test_cc3pniconduction test_3pni_fv_conduction.input -Problem.Name test_cc3pniconduction"
-                            --zeroThreshold {"velocity_w \(m/s\)_1":1e-8})
+                            --zeroThreshold {"velocity_Water \(m/s\)_1":1e-8})
 
 #install sources
 install(FILES
diff --git a/test/references/1p2cniboxconduction-reference.vtu b/test/references/1p2cniboxconduction-reference.vtu
index 066df3c1bbb49f036156a67e8d27369dd9a6d510..c813b18e43aa626f01390e8f13efb1bbae0a14f9 100644
--- a/test/references/1p2cniboxconduction-reference.vtu
+++ b/test/references/1p2cniboxconduction-reference.vtu
@@ -2,7 +2,7 @@
 <VTKFile type="UnstructuredGrid" version="0.1" byte_order="LittleEndian">
   <UnstructuredGrid>
     <Piece NumberOfCells="200" NumberOfPoints="402">
-      <PointData Scalars="p" Vectors="velocity_w (m/s)">
+      <PointData Scalars="p" Vectors="velocity_Water (m/s)">
         <DataArray type="Float32" Name="p" NumberOfComponents="1" format="ascii">
           100000 100000 100000 100000 100000 100000 100000 100000 100000 100000 100000 100000
           100000 100000 100000 100000 100000 100000 100000 100000 100000 100000 100000 100000
@@ -75,7 +75,7 @@
           0.00019143 0.00019143 0.000167501 0.000167501 0.000143572 0.000143572 0.000119644 0.000119644 9.57149e-05 9.57149e-05 7.17862e-05 7.17861e-05
           4.78574e-05 4.78574e-05 2.39287e-05 2.39287e-05 0 0
         </DataArray>
-        <DataArray type="Float32" Name="velocity_w (m/s)" NumberOfComponents="3" format="ascii">
+        <DataArray type="Float32" Name="velocity_Water (m/s)" NumberOfComponents="3" format="ascii">
           -1.16593e-09 8.51209e-19 0 -1.16052e-09 0 0 -1.16593e-09 8.51209e-19 0 -1.16052e-09 0 0
           -1.14449e-09 8.29172e-19 0 -1.14449e-09 8.29172e-19 0 -1.11832e-09 -4.09371e-19 0 -1.11832e-09 -4.09371e-19 0
           -1.08514e-09 -2.02051e-18 0 -1.08514e-09 -2.02051e-18 0 -1.04625e-09 -2.39224e-18 0 -1.04625e-09 -2.39224e-18 0
@@ -178,7 +178,7 @@
           8.81909e-11 -1.676e-19 0 8.81909e-11 -1.676e-19 0 8.81909e-11 6.70401e-19 0 8.81909e-11 6.70401e-19 0
           8.81909e-11 0 0 8.81909e-11 0 0
         </DataArray>
-        <DataArray type="Float32" Name="x^H2O_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="x^H2O_Water" NumberOfComponents="1" format="ascii">
           0.99999 0.99999 0.99999 0.99999 0.99999 0.99999 0.99999 0.99999 0.99999 0.99999 0.99999 0.99999
           0.99999 0.99999 0.99999 0.99999 0.99999 0.99999 0.99999 0.99999 0.99999 0.99999 0.99999 0.99999
           0.99999 0.99999 0.99999 0.99999 0.99999 0.99999 0.99999 0.99999 0.99999 0.99999 0.99999 0.99999
@@ -214,7 +214,7 @@
           0.99999 0.99999 0.99999 0.99999 0.99999 0.99999 0.99999 0.99999 0.99999 0.99999 0.99999 0.99999
           0.99999 0.99999 0.99999 0.99999 0.99999 0.99999
         </DataArray>
-        <DataArray type="Float32" Name="x^N2_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="x^N2_Water" NumberOfComponents="1" format="ascii">
           1e-05 1e-05 1e-05 1e-05 1e-05 1e-05 1e-05 1e-05 1e-05 1e-05 1e-05 1e-05
           1e-05 1e-05 1e-05 1e-05 1e-05 1e-05 1e-05 1e-05 1e-05 1e-05 1e-05 1e-05
           1e-05 1e-05 1e-05 1e-05 1e-05 1e-05 1e-05 1e-05 1e-05 1e-05 1e-05 1e-05
@@ -250,7 +250,7 @@
           1e-05 1e-05 1e-05 1e-05 1e-05 1e-05 1e-05 1e-05 1e-05 1e-05 1e-05 1e-05
           1e-05 1e-05 1e-05 1e-05 1e-05 1e-05
         </DataArray>
-        <DataArray type="Float32" Name="X^H2O_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="X^H2O_Water" NumberOfComponents="1" format="ascii">
           0.999984 0.999984 0.999984 0.999984 0.999984 0.999984 0.999984 0.999984 0.999984 0.999984 0.999984 0.999984
           0.999984 0.999984 0.999984 0.999984 0.999984 0.999984 0.999984 0.999984 0.999984 0.999984 0.999984 0.999984
           0.999984 0.999984 0.999984 0.999984 0.999984 0.999984 0.999984 0.999984 0.999984 0.999984 0.999984 0.999984
@@ -286,7 +286,7 @@
           0.999984 0.999984 0.999984 0.999984 0.999984 0.999984 0.999984 0.999984 0.999984 0.999984 0.999984 0.999984
           0.999984 0.999984 0.999984 0.999984 0.999984 0.999984
         </DataArray>
-        <DataArray type="Float32" Name="X^N2_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="X^N2_Water" NumberOfComponents="1" format="ascii">
           1.55498e-05 1.55498e-05 1.55498e-05 1.55498e-05 1.55498e-05 1.55498e-05 1.55498e-05 1.55498e-05 1.55498e-05 1.55498e-05 1.55498e-05 1.55498e-05
           1.55498e-05 1.55498e-05 1.55498e-05 1.55498e-05 1.55498e-05 1.55498e-05 1.55498e-05 1.55498e-05 1.55498e-05 1.55498e-05 1.55498e-05 1.55498e-05
           1.55498e-05 1.55498e-05 1.55498e-05 1.55498e-05 1.55498e-05 1.55498e-05 1.55498e-05 1.55498e-05 1.55498e-05 1.55498e-05 1.55498e-05 1.55498e-05
diff --git a/test/references/1p2cniboxconvection-reference.vtu b/test/references/1p2cniboxconvection-reference.vtu
index ef7fb528653fdff73f916b4824bdc4bd9089e6d0..079a32ba59681f50986c5057f040362b118282e3 100644
--- a/test/references/1p2cniboxconvection-reference.vtu
+++ b/test/references/1p2cniboxconvection-reference.vtu
@@ -2,7 +2,7 @@
 <VTKFile type="UnstructuredGrid" version="0.1" byte_order="LittleEndian">
   <UnstructuredGrid>
     <Piece NumberOfCells="80" NumberOfPoints="162">
-      <PointData Scalars="pressuere" Vectors="velocity_w (m/s)">
+      <PointData Scalars="pressuere" Vectors="velocity_Water (m/s)">
         <DataArray type="Float32" Name="p" NumberOfComponents="1" format="ascii">
           121579 121315 121579 121315 121051 121051 120787 120787 120522 120522 120258 120258
           119994 119994 119730 119730 119465 119465 119201 119201 118936 118936 118672 118672
@@ -35,7 +35,7 @@
           2170.43 2170.43 1899.12 1899.12 1627.82 1627.82 1356.52 1356.52 1085.21 1085.21 813.911 813.911
           542.607 542.607 271.304 271.304 0 0
         </DataArray>
-        <DataArray type="Float32" Name="velocity_w (m/s)" NumberOfComponents="3" format="ascii">
+        <DataArray type="Float32" Name="velocity_Water (m/s)" NumberOfComponents="3" format="ascii">
           0.0001 5.50706e-18 0 0.0001 -3.44192e-19 0 0.0001 5.50706e-18 0 0.0001 -3.44192e-19 0
           0.0001 3.09773e-18 0 0.0001 3.09773e-18 0 0.0001 -1.06699e-17 0 0.0001 -1.06699e-17 0
           0.0001 2.75349e-18 0 0.0001 2.75349e-18 0 0.0001 -1.37669e-17 0 0.0001 -1.37669e-17 0
@@ -78,7 +78,7 @@
           9.99937e-05 -3.3521e-19 0 9.99937e-05 -3.3521e-19 0 9.99937e-05 0 0 9.99937e-05 0 0
           9.99937e-05 0 0 9.99937e-05 0 0
         </DataArray>
-        <DataArray type="Float32" Name="x^H2O_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="x^H2O_Water" NumberOfComponents="1" format="ascii">
           1 1 1 1 1 1 1 1 1 1 1 1
           1 1 1 1 1 1 1 1 1 1 1 1
           1 1 1 1 1 1 1 1 1 1 1 1
@@ -94,7 +94,7 @@
           1 1 1 1 1 1 1 1 1 1 1 1
           1 1 1 1 1 1
         </DataArray>
-        <DataArray type="Float32" Name="x^N2_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="x^N2_Water" NumberOfComponents="1" format="ascii">
           1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10
           1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10
           1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10
@@ -110,7 +110,7 @@
           1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10
           1e-10 1e-10 1e-10 1e-10 1e-10 1e-10
         </DataArray>
-        <DataArray type="Float32" Name="X^H2O_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="X^H2O_Water" NumberOfComponents="1" format="ascii">
           1 1 1 1 1 1 1 1 1 1 1 1
           1 1 1 1 1 1 1 1 1 1 1 1
           1 1 1 1 1 1 1 1 1 1 1 1
@@ -126,7 +126,7 @@
           1 1 1 1 1 1 1 1 1 1 1 1
           1 1 1 1 1 1
         </DataArray>
-        <DataArray type="Float32" Name="X^N2_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="X^N2_Water" NumberOfComponents="1" format="ascii">
           1.55499e-10 1.55499e-10 1.55499e-10 1.55499e-10 1.55499e-10 1.55499e-10 1.55499e-10 1.55499e-10 1.55499e-10 1.55499e-10 1.55499e-10 1.55499e-10
           1.55499e-10 1.55499e-10 1.55499e-10 1.55499e-10 1.55499e-10 1.55499e-10 1.55499e-10 1.55499e-10 1.55499e-10 1.55499e-10 1.55499e-10 1.55499e-10
           1.55499e-10 1.55499e-10 1.55499e-10 1.55499e-10 1.55499e-10 1.55499e-10 1.55499e-10 1.55499e-10 1.55499e-10 1.55499e-10 1.55499e-10 1.55499e-10
diff --git a/test/references/1p2cniccconduction-reference.vtu b/test/references/1p2cniccconduction-reference.vtu
index 39c440c662a6fb5a891fbcf17b02cea93c8b8589..69ce24cc038a1aaf4191ca7303dbb94bb97cb050 100644
--- a/test/references/1p2cniccconduction-reference.vtu
+++ b/test/references/1p2cniccconduction-reference.vtu
@@ -2,7 +2,7 @@
 <VTKFile type="UnstructuredGrid" version="0.1" byte_order="LittleEndian">
   <UnstructuredGrid>
     <Piece NumberOfCells="200" NumberOfPoints="402">
-      <CellData Scalars="p" Vectors="velocity_w (m/s)">
+      <CellData Scalars="p" Vectors="velocity_Water (m/s)">
         <DataArray type="Float32" Name="p" NumberOfComponents="1" format="ascii">
           100000 100000 100000 100000 100000 100000 100000 100000 100000 100000 100000 100000
           100000 100000 100000 100000 100000 100000 100000 100000 100000 100000 100000 100000
@@ -41,7 +41,7 @@
           0.000466521 0.000442597 0.000418673 0.000394748 0.000370824 0.0003469 0.000322976 0.000299052 0.000275128 0.000251204 0.000227279 0.000203355
           0.000179431 0.000155507 0.000131583 0.000107659 8.37345e-05 5.98104e-05 3.58862e-05 1.19621e-05
         </DataArray>
-        <DataArray type="Float32" Name="velocity_w (m/s)" NumberOfComponents="3" format="ascii">
+        <DataArray type="Float32" Name="velocity_Water (m/s)" NumberOfComponents="3" format="ascii">
           -1.16432e-09 0 0 -1.15349e-09 0 0 -1.13227e-09 0 0 -1.10279e-09 0 0
           -1.06692e-09 0 0 -1.02441e-09 0 0 -9.75539e-10 0 0 -9.21308e-10 0 0
           -8.62751e-10 0 0 -8.00917e-10 0 0 -7.41148e-10 0 0 -6.85144e-10 0 0
@@ -93,7 +93,7 @@
           8.81741e-11 0 0 8.81741e-11 0 0 8.81741e-11 0 0 8.81741e-11 0 0
           8.81741e-11 0 0 8.81741e-11 0 0 8.81741e-11 0 0 8.81741e-11 0 0
         </DataArray>
-        <DataArray type="Float32" Name="x^H2O_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="x^H2O_Water" NumberOfComponents="1" format="ascii">
           0.99999 0.99999 0.99999 0.99999 0.99999 0.99999 0.99999 0.99999 0.99999 0.99999 0.99999 0.99999
           0.99999 0.99999 0.99999 0.99999 0.99999 0.99999 0.99999 0.99999 0.99999 0.99999 0.99999 0.99999
           0.99999 0.99999 0.99999 0.99999 0.99999 0.99999 0.99999 0.99999 0.99999 0.99999 0.99999 0.99999
@@ -112,7 +112,7 @@
           0.99999 0.99999 0.99999 0.99999 0.99999 0.99999 0.99999 0.99999 0.99999 0.99999 0.99999 0.99999
           0.99999 0.99999 0.99999 0.99999 0.99999 0.99999 0.99999 0.99999
         </DataArray>
-        <DataArray type="Float32" Name="x^N2_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="x^N2_Water" NumberOfComponents="1" format="ascii">
           1e-05 1e-05 1e-05 1e-05 1e-05 1e-05 1e-05 1e-05 1e-05 1e-05 1e-05 1e-05
           1e-05 1e-05 1e-05 1e-05 1e-05 1e-05 1e-05 1e-05 1e-05 1e-05 1e-05 1e-05
           1e-05 1e-05 1e-05 1e-05 1e-05 1e-05 1e-05 1e-05 1e-05 1e-05 1e-05 1e-05
@@ -131,7 +131,7 @@
           1e-05 1e-05 1e-05 1e-05 1e-05 1e-05 1e-05 1e-05 1e-05 1e-05 1e-05 1e-05
           1e-05 1e-05 1e-05 1e-05 1e-05 1e-05 1e-05 1e-05
         </DataArray>
-        <DataArray type="Float32" Name="X^H2O_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="X^H2O_Water" NumberOfComponents="1" format="ascii">
           0.999984 0.999984 0.999984 0.999984 0.999984 0.999984 0.999984 0.999984 0.999984 0.999984 0.999984 0.999984
           0.999984 0.999984 0.999984 0.999984 0.999984 0.999984 0.999984 0.999984 0.999984 0.999984 0.999984 0.999984
           0.999984 0.999984 0.999984 0.999984 0.999984 0.999984 0.999984 0.999984 0.999984 0.999984 0.999984 0.999984
@@ -150,7 +150,7 @@
           0.999984 0.999984 0.999984 0.999984 0.999984 0.999984 0.999984 0.999984 0.999984 0.999984 0.999984 0.999984
           0.999984 0.999984 0.999984 0.999984 0.999984 0.999984 0.999984 0.999984
         </DataArray>
-        <DataArray type="Float32" Name="X^N2_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="X^N2_Water" NumberOfComponents="1" format="ascii">
           1.55498e-05 1.55498e-05 1.55498e-05 1.55498e-05 1.55498e-05 1.55498e-05 1.55498e-05 1.55498e-05 1.55498e-05 1.55498e-05 1.55498e-05 1.55498e-05
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diff --git a/test/references/1p2cniccconvection-reference.vtu b/test/references/1p2cniccconvection-reference.vtu
index 835d4c0ff8956d4a1f3db66197a9c9d7810edb32..0293fd9a2339d4acd7fb7601d8dbfe4e4997b273 100644
--- a/test/references/1p2cniccconvection-reference.vtu
+++ b/test/references/1p2cniccconvection-reference.vtu
@@ -2,7 +2,7 @@
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   <UnstructuredGrid>
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-      <CellData Scalars="p" Vectors="velocity_w (m/s)">
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@@ -52,7 +52,7 @@
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diff --git a/test/references/1p2cniccmpfaconduction-reference.vtu b/test/references/1p2cniccmpfaconduction-reference.vtu
index 2ccf1fe1ed16b350efd31250d6965b25b574d8e1..2b626b830b2a8ac6a8a2fa231818d6e0da7e16f5 100644
--- a/test/references/1p2cniccmpfaconduction-reference.vtu
+++ b/test/references/1p2cniccmpfaconduction-reference.vtu
@@ -41,7 +41,7 @@
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@@ -79,7 +79,7 @@
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           1.55498e-05 1.55498e-05 1.55498e-05 1.55498e-05 1.55498e-05 1.55498e-05 1.55498e-05 1.55498e-05 1.55498e-05 1.55498e-05 1.55498e-05 1.55498e-05
diff --git a/test/references/1p2cniccmpfaconvection-reference.vtu b/test/references/1p2cniccmpfaconvection-reference.vtu
index 06b047a28d999d5df73f41ffa0d80d67fd968035..5c91c52f3a0c5e46eab1eb411a6b06e1afbbaaa0 100644
--- a/test/references/1p2cniccmpfaconvection-reference.vtu
+++ b/test/references/1p2cniccmpfaconvection-reference.vtu
@@ -21,7 +21,7 @@
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-        <DataArray type="Float32" Name="x^H2O_w" NumberOfComponents="1" format="ascii">
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@@ -30,7 +30,7 @@
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           1 1 1 1 1 1 1 1
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diff --git a/test/references/1p2ctestcc-reference.vtu b/test/references/1p2ctestcc-reference.vtu
index 3729e02bbe08c4d7477a6385a26fded0a5fd0291..4699da1a9f538e2cc1f9dfb4d5342e9058d99646 100644
--- a/test/references/1p2ctestcc-reference.vtu
+++ b/test/references/1p2ctestcc-reference.vtu
@@ -2,7 +2,7 @@
 <VTKFile type="UnstructuredGrid" version="0.1" byte_order="LittleEndian">
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-      <CellData Scalars="p" Vectors="velocity_w (m/s)">
+      <CellData Scalars="p" Vectors="velocity_Water (m/s)">
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@@ -15,7 +15,7 @@
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diff --git a/test/references/1p2ctestmpfa-reference.vtu b/test/references/1p2ctestmpfa-reference.vtu
index 6b0db83b63d860a49d53d115f4f2b2b4368fe23e..b585e1a34e7f838f5ad9a52bcb6f6192c89bc342 100644
--- a/test/references/1p2ctestmpfa-reference.vtu
+++ b/test/references/1p2ctestmpfa-reference.vtu
@@ -15,25 +15,25 @@
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diff --git a/test/references/3pniconductionbox-reference.vtu b/test/references/3pniconductionbox-reference.vtu
index 3490330550e0cb63e8725cae747be06dc7417a47..76c2fc8bf69a0e4b096cd36e5b93a32c57ded5a3 100644
--- a/test/references/3pniconductionbox-reference.vtu
+++ b/test/references/3pniconductionbox-reference.vtu
@@ -2,8 +2,8 @@
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diff --git a/test/references/3pniconductioncc-reference.vtu b/test/references/3pniconductioncc-reference.vtu
index 624cee4f9a737a3a90c328563d151145e63e0546..cd3d2cef4cdbae4392140900cd485092b8c2a602 100644
--- a/test/references/3pniconductioncc-reference.vtu
+++ b/test/references/3pniconductioncc-reference.vtu
@@ -2,8 +2,8 @@
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diff --git a/test/references/3pniconvectionbox-reference.vtu b/test/references/3pniconvectionbox-reference.vtu
index c3778bb138880ab4709c190b11fcb8660cb451ac..fa53625428a6bc3cf7a7b93bb8c13904870a3e57 100644
--- a/test/references/3pniconvectionbox-reference.vtu
+++ b/test/references/3pniconvectionbox-reference.vtu
@@ -2,8 +2,8 @@
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           -8.46979e-11 -8.46979e-11 -8.48705e-11 -8.48705e-11 -8.50416e-11 -8.50416e-11 -8.52119e-11 -8.52119e-11 -8.53827e-11 -8.53827e-11 -8.55548e-11 -8.55548e-11
@@ -51,7 +51,7 @@
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           -9.94603e-11 -9.94603e-11 -9.97295e-11 -9.97295e-11 -1e-10 -1e-10
         </DataArray>
-        <DataArray type="Float32" Name="p_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="p_Water" NumberOfComponents="1" format="ascii">
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           119994 119994 119730 119730 119465 119465 119201 119201 118936 118936 118672 118672
           118407 118407 118141 118141 117876 117876 117610 117610 117343 117343 117075 117075
@@ -67,7 +67,7 @@
           102170 102170 101899 101899 101628 101628 101357 101357 101085 101085 100814 100814
           100543 100543 100271 100271 100000 100000
         </DataArray>
-        <DataArray type="Float32" Name="p_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="p_NAPL" NumberOfComponents="1" format="ascii">
           121579 121315 121579 121315 121051 121051 120787 120787 120522 120522 120258 120258
           119994 119994 119730 119730 119465 119465 119201 119201 118936 118936 118672 118672
           118407 118407 118141 118141 117876 117876 117610 117610 117343 117343 117075 117075
@@ -83,7 +83,7 @@
           102170 102170 101899 101899 101628 101628 101357 101357 101085 101085 100814 100814
           100543 100543 100271 100271 100000 100000
         </DataArray>
-        <DataArray type="Float32" Name="p_g" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="p_Air" NumberOfComponents="1" format="ascii">
           121579 121315 121579 121315 121051 121051 120787 120787 120522 120522 120258 120258
           119994 119994 119730 119730 119465 119465 119201 119201 118936 118936 118672 118672
           118407 118407 118141 118141 117876 117876 117610 117610 117343 117343 117075 117075
@@ -99,7 +99,7 @@
           102170 102170 101899 101899 101628 101628 101357 101357 101085 101085 100814 100814
           100543 100543 100271 100271 100000 100000
         </DataArray>
-        <DataArray type="Float32" Name="rho_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="rho_Water" NumberOfComponents="1" format="ascii">
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           998.632 998.632 998.633 998.633 998.635 998.635 998.639 998.639 998.645 998.645 998.653 998.653
           998.663 998.663 998.673 998.673 998.684 998.684 998.696 998.696 998.708 998.708 998.721 998.721
@@ -115,7 +115,7 @@
           998.79 998.79 998.79 998.79 998.79 998.79 998.79 998.79 998.79 998.79 998.789 998.789
           998.789 998.789 998.789 998.789 998.789 998.789
         </DataArray>
-        <DataArray type="Float32" Name="rho_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="rho_NAPL" NumberOfComponents="1" format="ascii">
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           872.329 872.329 872.335 872.335 872.345 872.345 872.361 872.361 872.385 872.385 872.418 872.418
           872.46 872.46 872.51 872.51 872.567 872.567 872.629 872.629 872.694 872.694 872.759 872.759
@@ -131,7 +131,7 @@
           873.148 873.148 873.148 873.148 873.148 873.148 873.148 873.148 873.148 873.148 873.148 873.148
           873.148 873.148 873.148 873.148 873.149 873.149
         </DataArray>
-        <DataArray type="Float32" Name="rho_g" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="rho_Air" NumberOfComponents="1" format="ascii">
           1.45523 1.45206 1.45523 1.45206 1.4489 1.4489 1.44574 1.44574 1.44258 1.44258 1.43942 1.43942
           1.43628 1.43628 1.43315 1.43315 1.43004 1.43004 1.42698 1.42698 1.42395 1.42395 1.42098 1.42098
           1.41805 1.41805 1.41517 1.41517 1.41233 1.41233 1.4095 1.4095 1.40669 1.40669 1.40386 1.40386
@@ -195,7 +195,7 @@
           290.001 290.001 290.001 290.001 290.001 290.001 290.001 290.001 290.001 290.001 290.001 290.001
           290.001 290.001 290.001 290.001 290 290
         </DataArray>
-        <DataArray type="Float32" Name="velocity_w (m/s)" NumberOfComponents="3" format="ascii">
+        <DataArray type="Float32" Name="velocity_Water (m/s)" NumberOfComponents="3" format="ascii">
           0.0001 -3.44191e-19 0 0.0001 5.16287e-19 0 0.0001 -3.44191e-19 0 0.0001 5.16287e-19 0
           0.0001 1.20467e-18 0 0.0001 1.20467e-18 0 0.0001 1.37676e-18 0 0.0001 1.37676e-18 0
           0.0001 -1.03256e-18 0 0.0001 -1.03256e-18 0 0.0001 1.20461e-18 0 0.0001 1.20461e-18 0
@@ -238,7 +238,7 @@
           9.99936e-05 3.3521e-19 0 9.99936e-05 3.3521e-19 0 9.99937e-05 0 0 9.99937e-05 0 0
           9.99937e-05 0 0 9.99937e-05 0 0
         </DataArray>
-        <DataArray type="Float32" Name="velocity_n (m/s)" NumberOfComponents="3" format="ascii">
+        <DataArray type="Float32" Name="velocity_NAPL (m/s)" NumberOfComponents="3" format="ascii">
           0 0 0 0 0 0 0 0 0 0 0 0
           0 0 0 0 0 0 0 0 0 0 0 0
           0 0 0 0 0 0 0 0 0 0 0 0
@@ -281,7 +281,7 @@
           0 0 0 0 0 0 0 0 0 0 0 0
           0 0 0 0 0 0
         </DataArray>
-        <DataArray type="Float32" Name="velocity_g (m/s)" NumberOfComponents="3" format="ascii">
+        <DataArray type="Float32" Name="velocity_Air (m/s)" NumberOfComponents="3" format="ascii">
           0 0 0 0 0 0 0 0 0 0 0 0
           0 0 0 0 0 0 0 0 0 0 0 0
           0 0 0 0 0 0 0 0 0 0 0 0
diff --git a/test/references/3pniconvectioncc-reference.vtu b/test/references/3pniconvectioncc-reference.vtu
index 1bfbaf9acaa20433e2b422f929344002041f8ebb..df09afb0d042032ec919d16113387a2a14fc1ff3 100644
--- a/test/references/3pniconvectioncc-reference.vtu
+++ b/test/references/3pniconvectioncc-reference.vtu
@@ -2,8 +2,8 @@
 <VTKFile type="UnstructuredGrid" version="0.1" byte_order="LittleEndian">
   <UnstructuredGrid>
     <Piece NumberOfCells="80" NumberOfPoints="162">
-      <CellData Scalars="S_w" Vectors="velocity_w (m/s)">
-        <DataArray type="Float32" Name="S_w" NumberOfComponents="1" format="ascii">
+      <CellData Scalars="S_Water" Vectors="velocity_Water (m/s)">
+        <DataArray type="Float32" Name="S_Water" NumberOfComponents="1" format="ascii">
           1 1 1 1 1 1 1 1 1 1 1 1
           1 1 1 1 1 1 1 1 1 1 1 1
           1 1 1 1 1 1 1 1 1 1 1 1
@@ -12,7 +12,7 @@
           1 1 1 1 1 1 1 1 1 1 1 1
           1 1 1 1 1 1 1 1
         </DataArray>
-        <DataArray type="Float32" Name="S_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="S_NAPL" NumberOfComponents="1" format="ascii">
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           1.00076e-10 1.0007e-10 1.00063e-10 1.00056e-10 1.00048e-10 1.00041e-10 1.00034e-10 1.00028e-10 1.00022e-10 1.00018e-10 1.00014e-10 1.0001e-10
           1.00008e-10 1.00006e-10 1.00004e-10 1.00003e-10 1.00002e-10 1.00002e-10 1.00001e-10 1.00001e-10 1.00001e-10 1e-10 1e-10 1e-10
@@ -21,7 +21,7 @@
           1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10
           1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10
         </DataArray>
-        <DataArray type="Float32" Name="S_g" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="S_Air" NumberOfComponents="1" format="ascii">
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           -8.4784e-11 -8.49557e-11 -8.51263e-11 -8.52972e-11 -8.54686e-11 -8.56413e-11 -8.58167e-11 -8.59952e-11 -8.6177e-11 -8.63622e-11 -8.65512e-11 -8.67439e-11
           -8.69391e-11 -8.71376e-11 -8.7339e-11 -8.75425e-11 -8.77475e-11 -8.7955e-11 -8.81637e-11 -8.8374e-11 -8.85857e-11 -8.87985e-11 -8.90127e-11 -8.92278e-11
@@ -30,7 +30,7 @@
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           -9.80056e-11 -9.82668e-11 -9.85296e-11 -9.87938e-11 -9.90593e-11 -9.93263e-11 -9.95948e-11 -9.98645e-11
         </DataArray>
-        <DataArray type="Float32" Name="p_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="p_Water" NumberOfComponents="1" format="ascii">
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           118274 118009 117743 117476 117209 116942 116673 116405 116136 115866 115596 115326
           115055 114784 114514 114243 113972 113700 113429 113158 112887 112615 112344 112073
@@ -39,7 +39,7 @@
           105290 105019 104748 104476 104205 103934 103663 103391 103120 102849 102577 102306
           102035 101763 101492 101221 100950 100678 100407 100136
         </DataArray>
-        <DataArray type="Float32" Name="p_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="p_NAPL" NumberOfComponents="1" format="ascii">
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           118274 118009 117743 117476 117209 116942 116673 116405 116136 115866 115596 115326
           115055 114784 114514 114243 113972 113700 113429 113158 112887 112615 112344 112073
@@ -48,7 +48,7 @@
           105290 105019 104748 104476 104205 103934 103663 103391 103120 102849 102577 102306
           102035 101763 101492 101221 100950 100678 100407 100136
         </DataArray>
-        <DataArray type="Float32" Name="p_g" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="p_Air" NumberOfComponents="1" format="ascii">
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           118274 118009 117743 117476 117209 116942 116673 116405 116136 115866 115596 115326
           115055 114784 114514 114243 113972 113700 113429 113158 112887 112615 112344 112073
@@ -57,7 +57,7 @@
           105290 105019 104748 104476 104205 103934 103663 103391 103120 102849 102577 102306
           102035 101763 101492 101221 100950 100678 100407 100136
         </DataArray>
-        <DataArray type="Float32" Name="rho_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="rho_Water" NumberOfComponents="1" format="ascii">
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           998.668 998.678 998.69 998.702 998.715 998.727 998.738 998.749 998.758 998.766 998.773 998.779
           998.783 998.786 998.789 998.791 998.792 998.793 998.794 998.794 998.794 998.794 998.794 998.794
@@ -66,7 +66,7 @@
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           998.79 998.79 998.79 998.79 998.79 998.789 998.789 998.789
         </DataArray>
-        <DataArray type="Float32" Name="rho_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="rho_NAPL" NumberOfComponents="1" format="ascii">
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           872.485 872.539 872.598 872.662 872.726 872.79 872.849 872.904 872.952 872.994 873.029 873.058
           873.081 873.099 873.112 873.122 873.13 873.135 873.139 873.142 873.144 873.145 873.146 873.147
@@ -75,7 +75,7 @@
           873.148 873.148 873.148 873.148 873.148 873.148 873.148 873.148 873.148 873.148 873.148 873.148
           873.148 873.148 873.148 873.148 873.148 873.148 873.148 873.148
         </DataArray>
-        <DataArray type="Float32" Name="rho_g" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="rho_Air" NumberOfComponents="1" format="ascii">
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           1.41661 1.41375 1.41091 1.40809 1.40527 1.40243 1.39957 1.39666 1.39372 1.39072 1.38769 1.38461
           1.38149 1.37835 1.37517 1.37198 1.36876 1.36554 1.3623 1.35906 1.35581 1.35256 1.34931 1.34606
@@ -111,7 +111,7 @@
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           290.001 290.001 290.001 290.001 290.001 290.001 290.001 290.001
         </DataArray>
-        <DataArray type="Float32" Name="velocity_w (m/s)" NumberOfComponents="3" format="ascii">
+        <DataArray type="Float32" Name="velocity_Water (m/s)" NumberOfComponents="3" format="ascii">
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           0.0001 0 0 0.0001 0 0 0.0001 0 0 0.0001 0 0
           9.99999e-05 0 0 9.99997e-05 0 0 9.99995e-05 0 0 9.99991e-05 0 0
@@ -133,7 +133,7 @@
           9.99936e-05 0 0 9.99936e-05 0 0 9.99936e-05 0 0 9.99936e-05 0 0
           9.99936e-05 0 0 9.99936e-05 0 0 9.99937e-05 0 0 9.99937e-05 0 0
         </DataArray>
-        <DataArray type="Float32" Name="velocity_n (m/s)" NumberOfComponents="3" format="ascii">
+        <DataArray type="Float32" Name="velocity_NAPL (m/s)" NumberOfComponents="3" format="ascii">
           0 0 0 0 0 0 0 0 0 0 0 0
           0 0 0 0 0 0 0 0 0 0 0 0
           0 0 0 0 0 0 0 0 0 0 0 0
@@ -155,7 +155,7 @@
           0 0 0 0 0 0 0 0 0 0 0 0
           0 0 0 0 0 0 0 0 0 0 0 0
         </DataArray>
-        <DataArray type="Float32" Name="velocity_g (m/s)" NumberOfComponents="3" format="ascii">
+        <DataArray type="Float32" Name="velocity_Air (m/s)" NumberOfComponents="3" format="ascii">
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           0 0 0 0 0 0 0 0 0 0 0 0
           0 0 0 0 0 0 0 0 0 0 0 0
diff --git a/test/references/3pwateroilbox-reference.vtu b/test/references/3pwateroilbox-reference.vtu
index dfec51dfed80a036c7972d05ba56a60f475c7014..7bddf327206cb1315c6fc83761463cac762d6c9f 100644
--- a/test/references/3pwateroilbox-reference.vtu
+++ b/test/references/3pwateroilbox-reference.vtu
@@ -2,8 +2,8 @@
 <VTKFile type="UnstructuredGrid" version="0.1" byte_order="LittleEndian">
   <UnstructuredGrid>
     <Piece NumberOfCells="2400" NumberOfPoints="2501">
-      <PointData Scalars="S_w">
-        <DataArray type="Float32" Name="S_w" NumberOfComponents="1" format="ascii">
+      <PointData Scalars="S_Water">
+        <DataArray type="Float32" Name="S_Water" NumberOfComponents="1" format="ascii">
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           0.701163 0.701164 0.701136 0.701137 0.701108 0.701109 0.701079 0.70108 0.70105 0.70105 0.70102 0.70102
@@ -214,7 +214,7 @@
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           0.700002 0.700002 0.700001 0.700001 0.7
         </DataArray>
-        <DataArray type="Float32" Name="S_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="S_NAPL" NumberOfComponents="1" format="ascii">
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           0.298837 0.298836 0.298864 0.298863 0.298892 0.298891 0.298921 0.29892 0.29895 0.29895 0.29898 0.29898
@@ -425,7 +425,7 @@
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           0.299998 0.299998 0.299999 0.299999 0.3
         </DataArray>
-        <DataArray type="Float32" Name="S_g" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="S_Gas" NumberOfComponents="1" format="ascii">
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           0 0 0 0 0 0 0 0 0 0 0 0
           0 0 0 0 0 0 0 0 0 0 0 0
@@ -636,7 +636,7 @@
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-        <DataArray type="Float32" Name="p_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="p_Water" NumberOfComponents="1" format="ascii">
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           4.44779e+06 4.44122e+06 4.45295e+06 4.44565e+06 4.45348e+06 4.44556e+06 4.45057e+06 4.44217e+06 4.44517e+06 4.4364e+06 4.438e+06 4.42896e+06
           4.4296e+06 4.42035e+06 4.42037e+06 4.41096e+06 4.41059e+06 4.40107e+06 4.40047e+06 4.39086e+06 4.39017e+06 4.3805e+06 4.37979e+06 4.37007e+06
@@ -847,7 +847,7 @@
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           3.6336e+06 3.63343e+06 3.63326e+06 3.6331e+06 3.63302e+06
         </DataArray>
-        <DataArray type="Float32" Name="p_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="p_NAPL" NumberOfComponents="1" format="ascii">
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           4.44779e+06 4.44122e+06 4.45295e+06 4.44565e+06 4.45348e+06 4.44556e+06 4.45057e+06 4.44217e+06 4.44517e+06 4.4364e+06 4.438e+06 4.42896e+06
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@@ -1058,7 +1058,7 @@
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           3.6336e+06 3.63343e+06 3.63326e+06 3.6331e+06 3.63302e+06
         </DataArray>
-        <DataArray type="Float32" Name="p_g" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="p_Gas" NumberOfComponents="1" format="ascii">
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@@ -1269,7 +1269,7 @@
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-        <DataArray type="Float32" Name="rho_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="rho_Water" NumberOfComponents="1" format="ascii">
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           999.715 999.71 999.711 999.706 999.707 999.702 999.702 999.698 999.698 999.694 999.693 999.689
@@ -1480,7 +1480,7 @@
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           999.367 999.367 999.367 999.366 999.366
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-        <DataArray type="Float32" Name="rho_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="rho_NAPL" NumberOfComponents="1" format="ascii">
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@@ -1691,7 +1691,7 @@
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-        <DataArray type="Float32" Name="rho_g" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="rho_Gas" NumberOfComponents="1" format="ascii">
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@@ -1902,7 +1902,7 @@
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+        <DataArray type="Float32" Name="mob_Water" NumberOfComponents="1" format="ascii">
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@@ -2113,7 +2113,7 @@
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           197.416 197.416 197.415 197.414 197.414
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-        <DataArray type="Float32" Name="mob_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="mob_NAPL" NumberOfComponents="1" format="ascii">
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@@ -2324,7 +2324,7 @@
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-        <DataArray type="Float32" Name="mob_g" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="mob_Gas" NumberOfComponents="1" format="ascii">
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@@ -2535,7 +2535,7 @@
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+        <DataArray type="Float32" Name="viscos_Water" NumberOfComponents="1" format="ascii">
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@@ -2746,7 +2746,7 @@
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-        <DataArray type="Float32" Name="viscos_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="viscos_NAPL" NumberOfComponents="1" format="ascii">
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@@ -2957,7 +2957,7 @@
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-        <DataArray type="Float32" Name="viscos_g" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="viscos_Gas" NumberOfComponents="1" format="ascii">
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@@ -3168,7 +3168,7 @@
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-        <DataArray type="Float32" Name="x^H2O_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="x^H2O_Water" NumberOfComponents="1" format="ascii">
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           1 1 1 1 1 1 1 1 1 1 1 1
           1 1 1 1 1 1 1 1 1 1 1 1
@@ -3379,7 +3379,7 @@
           1 1 1 1 1 1 1 1 1 1 1 1
           1 1 1 1 1
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-        <DataArray type="Float32" Name="x^heavyoil_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="x^heavyoil_Water" NumberOfComponents="1" format="ascii">
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@@ -3590,7 +3590,7 @@
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-        <DataArray type="Float32" Name="x^H2O_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="x^H2O_NAPL" NumberOfComponents="1" format="ascii">
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           0 0 0 0 0 0 0 0 0 0 0 0
@@ -3801,7 +3801,7 @@
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-        <DataArray type="Float32" Name="x^heavyoil_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="x^heavyoil_NAPL" NumberOfComponents="1" format="ascii">
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           1 1 1 1 1 1 1 1 1 1 1 1
           1 1 1 1 1 1 1 1 1 1 1 1
@@ -4012,7 +4012,7 @@
           1 1 1 1 1 1 1 1 1 1 1 1
           1 1 1 1 1
         </DataArray>
-        <DataArray type="Float32" Name="x^H2O_g" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="x^H2O_Gas" NumberOfComponents="1" format="ascii">
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@@ -4223,7 +4223,7 @@
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-        <DataArray type="Float32" Name="x^heavyoil_g" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="x^heavyoil_Gas" NumberOfComponents="1" format="ascii">
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diff --git a/test/references/boxtracermaxwellstefan-reference.vtu b/test/references/boxtracermaxwellstefan-reference.vtu
index 1eb09454435ef6b5e24d79ba11b86a8e4079b97d..37b33090391ec75b61736859c7c28182ba5ed2ed 100644
--- a/test/references/boxtracermaxwellstefan-reference.vtu
+++ b/test/references/boxtracermaxwellstefan-reference.vtu
@@ -2,8 +2,8 @@
 <VTKFile type="UnstructuredGrid" version="0.1" byte_order="LittleEndian">
   <UnstructuredGrid>
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-      <PointData Scalars="x_H2" Vectors="velocity_Gas (m/s)">
-        <DataArray type="Float32" Name="x_H2" NumberOfComponents="1" format="ascii">
+      <PointData Scalars="x^H2" Vectors="velocity_Gas (m/s)">
+        <DataArray type="Float32" Name="x^H2" NumberOfComponents="1" format="ascii">
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@@ -86,7 +86,7 @@
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         </DataArray>
-        <DataArray type="Float32" Name="X_H2" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="X^H2" NumberOfComponents="1" format="ascii">
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@@ -169,7 +169,7 @@
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-        <DataArray type="Float32" Name="x_N2" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="x^N2" NumberOfComponents="1" format="ascii">
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@@ -252,7 +252,7 @@
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-        <DataArray type="Float32" Name="X_N2" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="X^N2" NumberOfComponents="1" format="ascii">
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@@ -335,7 +335,7 @@
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-        <DataArray type="Float32" Name="x_CO2" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="x^CO2" NumberOfComponents="1" format="ascii">
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@@ -418,7 +418,7 @@
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         </DataArray>
-        <DataArray type="Float32" Name="X_CO2" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="X^CO2" NumberOfComponents="1" format="ascii">
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diff --git a/test/references/cc2pcornerpoint-reference.vtu b/test/references/cc2pcornerpoint-reference.vtu
index a009cc2d792bdf747c221e50e6f40dc7703b2a28..6bb123056677c14fda02c9780624fb07ea17061f 100644
--- a/test/references/cc2pcornerpoint-reference.vtu
+++ b/test/references/cc2pcornerpoint-reference.vtu
@@ -9,28 +9,28 @@
         <DataArray type="Float32" Name="pc" NumberOfComponents="1" format="ascii">
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         </DataArray>
-        <DataArray type="Float32" Name="S_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="S_liqSimpleH2O" NumberOfComponents="1" format="ascii">
           0.285556 0.652038 0.702397 0.96918
         </DataArray>
-        <DataArray type="Float32" Name="p_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="p_liqSimpleH2O" NumberOfComponents="1" format="ascii">
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         </DataArray>
-        <DataArray type="Float32" Name="rho_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="rho_liqSimpleH2O" NumberOfComponents="1" format="ascii">
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         </DataArray>
-        <DataArray type="Float32" Name="mob_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="mob_liqSimpleH2O" NumberOfComponents="1" format="ascii">
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         </DataArray>
-        <DataArray type="Float32" Name="S_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="S_liqTrichloroethene" NumberOfComponents="1" format="ascii">
           0.714444 0.347962 0.297603 0.0308204
         </DataArray>
-        <DataArray type="Float32" Name="p_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="p_liqTrichloroethene" NumberOfComponents="1" format="ascii">
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         </DataArray>
-        <DataArray type="Float32" Name="rho_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="rho_liqTrichloroethene" NumberOfComponents="1" format="ascii">
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         </DataArray>
-        <DataArray type="Float32" Name="mob_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="mob_liqTrichloroethene" NumberOfComponents="1" format="ascii">
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         </DataArray>
         <DataArray type="Float32" Name="process rank" NumberOfComponents="1" format="ascii">
diff --git a/test/references/cctracermaxwellstefan-reference.vtu b/test/references/cctracermaxwellstefan-reference.vtu
index da22d32047ce308d8d115b17fe0b93f161d61c31..211573708e32e9615c438aa7a92991716b03aaa7 100644
--- a/test/references/cctracermaxwellstefan-reference.vtu
+++ b/test/references/cctracermaxwellstefan-reference.vtu
@@ -2,8 +2,8 @@
 <VTKFile type="UnstructuredGrid" version="0.1" byte_order="LittleEndian">
   <UnstructuredGrid>
     <Piece NumberOfCells="900" NumberOfPoints="961">
-      <CellData Scalars="x_H2" Vectors="velocity_Gas (m/s)">
-        <DataArray type="Float32" Name="x_H2" NumberOfComponents="1" format="ascii">
+      <CellData Scalars="x^H2" Vectors="velocity_Gas (m/s)">
+        <DataArray type="Float32" Name="x^H2" NumberOfComponents="1" format="ascii">
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@@ -80,7 +80,7 @@
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         </DataArray>
-        <DataArray type="Float32" Name="X_H2" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="X^H2" NumberOfComponents="1" format="ascii">
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@@ -157,7 +157,7 @@
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         </DataArray>
-        <DataArray type="Float32" Name="x_N2" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="x^N2" NumberOfComponents="1" format="ascii">
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@@ -234,7 +234,7 @@
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-        <DataArray type="Float32" Name="X_N2" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="X^N2" NumberOfComponents="1" format="ascii">
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@@ -311,7 +311,7 @@
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         </DataArray>
-        <DataArray type="Float32" Name="x_CO2" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="x^CO2" NumberOfComponents="1" format="ascii">
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@@ -388,7 +388,7 @@
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         </DataArray>
-        <DataArray type="Float32" Name="X_CO2" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="X^CO2" NumberOfComponents="1" format="ascii">
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diff --git a/test/references/co2box-reference.vtu b/test/references/co2box-reference.vtu
index 452684b97aa2219233e8a64ce9d897745a57c412..06b0148a60ec2991ae5c9353114087df7595578f 100644
--- a/test/references/co2box-reference.vtu
+++ b/test/references/co2box-reference.vtu
@@ -2,8 +2,8 @@
 <VTKFile type="UnstructuredGrid" version="0.1" byte_order="LittleEndian">
   <UnstructuredGrid>
     <Piece NumberOfCells="3667" NumberOfPoints="3794">
-      <PointData Scalars="S_n">
-        <DataArray type="Float32" Name="S_n" NumberOfComponents="1" format="ascii">
+      <PointData Scalars="S_CO2">
+        <DataArray type="Float32" Name="S_CO2" NumberOfComponents="1" format="ascii">
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           0 0 0 0 0 0 0.338733 0.174925 0 0.357728 0.215148 0
           0 0 0 0 0 0 0 0 0 0 0 0
@@ -322,7 +322,7 @@
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         </DataArray>
-        <DataArray type="Float32" Name="S_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="S_Brine" NumberOfComponents="1" format="ascii">
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           1 1 1 1 1 1 0.661267 0.825075 1 0.642272 0.784852 1
           1 1 1 1 1 1 1 1 1 1 1 1
@@ -641,7 +641,7 @@
           1 1 1 1 1 1 1 1 1 1 1 1
           1 1
         </DataArray>
-        <DataArray type="Float32" Name="p_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="p_CO2" NumberOfComponents="1" format="ascii">
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           1.38509e+07 1.3833e+07 1.38369e+07 1.38131e+07 1.38145e+07 1.38598e+07 1.38936e+07 1.38759e+07 1.38459e+07 1.38819e+07 1.38669e+07 1.38299e+07
           1.38128e+07 1.37898e+07 1.37877e+07 1.37621e+07 1.38184e+07 1.37905e+07 1.37997e+07 1.37689e+07 1.37803e+07 1.37535e+07 1.37611e+07 1.37391e+07
@@ -960,7 +960,7 @@
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           1.16232e+07 1.1627e+07
         </DataArray>
-        <DataArray type="Float32" Name="p_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="p_Brine" NumberOfComponents="1" format="ascii">
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           1.38028e+07 1.37798e+07 1.37777e+07 1.37521e+07 1.38084e+07 1.37805e+07 1.37897e+07 1.37589e+07 1.37703e+07 1.37435e+07 1.37511e+07 1.37291e+07
@@ -1598,7 +1598,7 @@
           10000 10000 10000 10000 10000 10000 10000 10000 10000 10000 10000 10000
           10000 10000
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-        <DataArray type="Float32" Name="rho_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="rho_Brine" NumberOfComponents="1" format="ascii">
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           1066.1 1066.04 1066.07 1066.07 1066 1066.02 1065.99 1066.01 1065.98 1066 1065.97 1065.99
@@ -1917,7 +1917,7 @@
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           1066.41 1066.41
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-        <DataArray type="Float32" Name="rho_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="rho_CO2" NumberOfComponents="1" format="ascii">
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           709.646 708.585 709.115 708.599 708.004 708.004 707.511 707.478 707.001 706.968 706.493 706.526
@@ -2236,7 +2236,7 @@
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           670.47 670.636
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-        <DataArray type="Float32" Name="mob_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="mob_Brine" NumberOfComponents="1" format="ascii">
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           1247.58 1248.42 1247.36 1247.08 1250.86 1249.52 1250.86 1249.44 1250.86 1249.63 1250.86 1249.75
@@ -2555,7 +2555,7 @@
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           1198.95 1198.95
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-        <DataArray type="Float32" Name="mob_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="mob_CO2" NumberOfComponents="1" format="ascii">
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diff --git a/test/references/co2cc-reference.vtu b/test/references/co2cc-reference.vtu
index 61d41e463e3459deb733e45237965282b2e2215a..8e94f6120e94f59066b59e24a4582feee07f9c81 100644
--- a/test/references/co2cc-reference.vtu
+++ b/test/references/co2cc-reference.vtu
@@ -2,8 +2,8 @@
 <VTKFile type="UnstructuredGrid" version="0.1" byte_order="LittleEndian">
   <UnstructuredGrid>
     <Piece NumberOfCells="3667" NumberOfPoints="3794">
-      <CellData Scalars="S_n">
-        <DataArray type="Float32" Name="S_n" NumberOfComponents="1" format="ascii">
+      <CellData Scalars="S_CO2">
+        <DataArray type="Float32" Name="S_CO2" NumberOfComponents="1" format="ascii">
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@@ -311,7 +311,7 @@
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+        <DataArray type="Float32" Name="S_Brine" NumberOfComponents="1" format="ascii">
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           1 1 1 1 1 1 1 1 1 1 0.877036 0.684212
@@ -619,7 +619,7 @@
           1 1 1 1 1 1 1 1 1 1 1 1
           1 1 1 1 1 1 1
         </DataArray>
-        <DataArray type="Float32" Name="p_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="p_CO2" NumberOfComponents="1" format="ascii">
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@@ -927,7 +927,7 @@
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           1.16782e+07 1.16781e+07 1.16633e+07 1.16524e+07 1.16503e+07 1.16503e+07 1.1648e+07
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-        <DataArray type="Float32" Name="p_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="p_Brine" NumberOfComponents="1" format="ascii">
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@@ -1543,7 +1543,7 @@
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           10000 10000 10000 10000 10000 10000 10000
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-        <DataArray type="Float32" Name="rho_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="rho_Brine" NumberOfComponents="1" format="ascii">
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           1066.05 1066.04 1066.04 1066.07 1066.03 1066.02 1066.02 1066.04 1066.05 1066.04 1073.71 1073.74
@@ -1851,7 +1851,7 @@
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-        <DataArray type="Float32" Name="rho_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="rho_CO2" NumberOfComponents="1" format="ascii">
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@@ -2159,7 +2159,7 @@
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-        <DataArray type="Float32" Name="mob_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="mob_Brine" NumberOfComponents="1" format="ascii">
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@@ -2467,7 +2467,7 @@
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-        <DataArray type="Float32" Name="mob_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="mob_CO2" NumberOfComponents="1" format="ascii">
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diff --git a/test/references/co2nibox-reference.vtu b/test/references/co2nibox-reference.vtu
index 7b4426b48baacfb1503b3844e6fbffa54391d627..cd54260a3a85f4a76021bb2e4a38665a559906ae 100644
--- a/test/references/co2nibox-reference.vtu
+++ b/test/references/co2nibox-reference.vtu
@@ -2,8 +2,8 @@
 <VTKFile type="UnstructuredGrid" version="0.1" byte_order="LittleEndian">
   <UnstructuredGrid>
     <Piece NumberOfCells="3667" NumberOfPoints="3794">
-      <PointData Scalars="S_n">
-        <DataArray type="Float32" Name="S_n" NumberOfComponents="1" format="ascii">
+      <PointData Scalars="S_CO2">
+        <DataArray type="Float32" Name="S_CO2" NumberOfComponents="1" format="ascii">
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@@ -322,7 +322,7 @@
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-        <DataArray type="Float32" Name="S_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="S_Brine" NumberOfComponents="1" format="ascii">
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@@ -641,7 +641,7 @@
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           1 1
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-        <DataArray type="Float32" Name="p_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="p_CO2" NumberOfComponents="1" format="ascii">
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@@ -960,7 +960,7 @@
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           1.16232e+07 1.1627e+07
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-        <DataArray type="Float32" Name="p_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="p_Brine" NumberOfComponents="1" format="ascii">
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@@ -1598,7 +1598,7 @@
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diff --git a/test/references/co2nicc-reference.vtu b/test/references/co2nicc-reference.vtu
index d2492adfe51c285169aacfadeb30f74e8020fb60..d70cd7f8e98732a9cf1659496426e413b928830c 100644
--- a/test/references/co2nicc-reference.vtu
+++ b/test/references/co2nicc-reference.vtu
@@ -2,8 +2,8 @@
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-        <DataArray type="Float32" Name="S_n" NumberOfComponents="1" format="ascii">
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diff --git a/test/references/column3p3cnibox-reference.vtu b/test/references/column3p3cnibox-reference.vtu
index 295b8855d051e493d824b9ee4eee53f4c26a5885..ffefab99e71b78711b1572f2f6f9e8ad27545483 100644
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@@ -371,7 +371,7 @@
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diff --git a/test/references/column3p3cnicc-reference.vtu b/test/references/column3p3cnicc-reference.vtu
index 185f78c2e7a789e54f079595a421a57f4c8a31ac..166a26c8c469cd40e730a9265038acb085635ce3 100644
--- a/test/references/column3p3cnicc-reference.vtu
+++ b/test/references/column3p3cnicc-reference.vtu
@@ -2,8 +2,8 @@
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-      <CellData Scalars="S_w">
-        <DataArray type="Float32" Name="S_w" NumberOfComponents="1" format="ascii">
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+        <DataArray type="Float32" Name="x^H2O_Water" NumberOfComponents="1" format="ascii">
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diff --git a/test/references/combustion-reference.vtp b/test/references/combustion-reference.vtp
index ccdd59325bb992af6b0d0c82e6cb74cd30c39255..7d2ec9e75311dac1ac0415c27b597ed2170cf56f 100644
--- a/test/references/combustion-reference.vtp
+++ b/test/references/combustion-reference.vtp
@@ -2,8 +2,8 @@
 <VTKFile type="PolyData" version="0.1" byte_order="LittleEndian">
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-        <DataArray type="Float32" Name="S_w" NumberOfComponents="1" format="ascii">
+      <PointData Scalars="S_Water">
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           100008 99997.1 99986.1 99975 99964 99952.9 99941.9 99930.9 99919.8 99908.8 99897.8 99886.7
@@ -60,7 +60,7 @@
           98623.1 98619.1 98614.9 98610.5 98605.9 98601.1 98596.1 98590.8 98585.3 98579.5 98573.4 98567
           98560.4 98553.3 98545.9 98538.1 98529.8 98521 98511.7 98502.1
         </DataArray>
-        <DataArray type="Float32" Name="p_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="p_Nitrogen" NumberOfComponents="1" format="ascii">
           100273 100262 100251 100240 100229 100218 100207 100196 100185 100174 100163 100152
           100141 100130 100119 100107 100096 100085 100074 100063 100052 100041 100030 100019
           100008 99997.1 99986.1 99975 99964 99952.9 99941.9 99930.9 99919.8 99908.8 99897.8 99886.7
@@ -79,7 +79,7 @@
           100119 100115 100111 100106 100102 100097 100092 100087 100081 100075 100069 100063
           100056 100049 100042 100034 100026 100018 100009 100000
         </DataArray>
-        <DataArray type="Float32" Name="rho_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="rho_Water" NumberOfComponents="1" format="ascii">
           1044 1044 1044 1044 1044 1044 1044 1044 1044 1044 1044 1044
           1044 1044 1044 1044 1044 1044 1044 1044 1044 1044 1044 1044
           1044 1044 1044 1044 1044 1044 1044 1044 1044 1044 1044 1044
@@ -98,7 +98,7 @@
           1044 1044 1044 1044 1044 1044 1044 1044 1044 1044 1044 1044
           1044 1044 1044 1044 1044 1044 1044 1044
         </DataArray>
-        <DataArray type="Float32" Name="rho_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="rho_Nitrogen" NumberOfComponents="1" format="ascii">
           1.679 1.679 1.679 1.679 1.679 1.679 1.679 1.679 1.679 1.679 1.679 1.679
           1.679 1.679 1.679 1.679 1.679 1.679 1.679 1.679 1.679 1.679 1.679 1.679
           1.679 1.679 1.679 1.679 1.679 1.679 1.679 1.679 1.679 1.679 1.679 1.679
@@ -117,7 +117,7 @@
           1.679 1.679 1.679 1.679 1.679 1.679 1.679 1.679 1.679 1.679 1.679 1.679
           1.679 1.679 1.679 1.679 1.679 1.679 1.679 1.679
         </DataArray>
-        <DataArray type="Float32" Name="lambda_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="mob_Water" NumberOfComponents="1" format="ascii">
           3555.51 3555.51 3555.51 3555.51 3555.51 3555.51 3555.51 3555.51 3555.51 3555.51 3555.51 3555.51
           3555.51 3555.51 3555.51 3555.51 3555.51 3555.51 3555.51 3555.51 3555.51 3555.51 3555.51 3555.51
           3555.51 3555.51 3555.51 3555.51 3555.51 3555.51 3555.51 3555.51 3555.51 3555.51 3555.51 3555.51
@@ -136,7 +136,7 @@
           1.88676e-05 1.88332e-05 1.87971e-05 1.87593e-05 1.87195e-05 1.86775e-05 1.86326e-05 1.85832e-05 1.85261e-05 1.84537e-05 1.83493e-05 1.81776e-05
           1.7869e-05 1.72984e-05 1.62719e-05 1.45512e-05 1.19604e-05 8.60249e-06 5.17936e-06 3.55551e-06
         </DataArray>
-        <DataArray type="Float32" Name="lambda_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="mob_Nitrogen" NumberOfComponents="1" format="ascii">
           0 0 0 0 0 0 0 0 0 0 0 0
           0 0 0 0 0 0 0 0 0 0 0 0
           0 0 0 0 0 0 0 0 0 0 0 0
@@ -174,7 +174,7 @@
           0.35 0.35 0.35 0.35 0.35 0.35 0.35 0.35 0.35 0.35 0.35 0.35
           0.35 0.35 0.35 0.35 0.35 0.35 0.35 0.35
         </DataArray>
-        <DataArray type="Float32" Name="x^SimpleH2O_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="x^SimpleH2O_Water" NumberOfComponents="1" format="ascii">
           1 1 1 1 1 1 1 1 1 1 1 1
           1 1 1 1 1 1 1 1 1 1 1 1
           1 1 1 1 1 1 1 1 1 1 1 1
@@ -193,7 +193,7 @@
           1 1 1 1 1 1 1 1 1 1 1 1
           1 1 1 1 1 1 1 0.406912
         </DataArray>
-        <DataArray type="Float32" Name="x^N2_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="x^N2_Water" NumberOfComponents="1" format="ascii">
           0 0 0 0 0 0 0 0 0 0 0 0
           -0 -0 -0 -0 -0 -0 0 0 0 0 0 0
           0 0 0 0 0 0 0 0 0 0 0 0
@@ -212,7 +212,7 @@
           0 0 0 0 0 0 0 0 0 0 0 0
           0 0 0 0 0 0 0 0
         </DataArray>
-        <DataArray type="Float32" Name="x^SimpleH2O_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="x^SimpleH2O_Nitrogen" NumberOfComponents="1" format="ascii">
           0.03529 0.0352982 0.0353048 0.0353116 0.0353187 0.0353262 0.035334 0.0353423 0.035351 0.0353603 0.0353701 0.0353805
           0.0353917 0.0354036 0.0354164 0.0354301 0.0354449 0.0354608 0.0354781 0.0354967 0.0355169 0.0355389 0.0355628 0.0355889
           0.0356173 0.0356483 0.0356822 0.0357194 0.0357601 0.0358048 0.0358539 0.0359078 0.0359671 0.0360324 0.0361043 0.0361836
@@ -231,7 +231,7 @@
           1 1 1 1 1 1 1 1 1 1 1 1
           1 1 1 1 1 1 1 1
         </DataArray>
-        <DataArray type="Float32" Name="x^N2_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="x^N2_Nitrogen" NumberOfComponents="1" format="ascii">
           0 0 0 0 0 0 0 0 0 0 0 0
           -0 -0 -0 -0 -0 -0 0 0 0 0 0 0
           0 0 0 0 0 0 0 0 0 0 0 0
@@ -250,7 +250,7 @@
           0 0 0 0 0 0 0 0 0 0 0 0
           0 0 0 0 0 0 0 0
         </DataArray>
-        <DataArray type="Float32" Name="T_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="T_Water" NumberOfComponents="1" format="ascii">
           300.01 300.012 300.013 300.015 300.016 300.018 300.02 300.022 300.024 300.027 300.03 300.033
           300.036 300.04 300.044 300.049 300.054 300.06 300.067 300.074 300.081 300.09 300.1 300.11
           300.122 300.135 300.149 300.165 300.183 300.202 300.223 300.247 300.273 300.302 300.335 300.37
@@ -269,7 +269,7 @@
           372.789 372.788 372.787 372.786 372.784 372.783 372.782 372.78 372.779 372.777 372.775 372.774
           372.772 372.77 372.768 372.766 372.763 372.761 372.758 400
         </DataArray>
-        <DataArray type="Float32" Name="T_solid" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="T_Solid" NumberOfComponents="1" format="ascii">
           300.011 300.012 300.013 300.015 300.016 300.018 300.02 300.022 300.024 300.027 300.03 300.033
           300.037 300.04 300.045 300.049 300.055 300.061 300.067 300.074 300.082 300.091 300.1 300.111
           300.123 300.136 300.15 300.166 300.184 300.203 300.225 300.249 300.275 300.304 300.337 300.372
@@ -288,7 +288,7 @@
           372.789 372.788 372.787 372.786 372.784 372.783 372.782 372.78 372.779 372.777 372.775 372.774
           372.772 372.77 372.768 372.766 372.763 372.761 372.758 400
         </DataArray>
-        <DataArray type="Float32" Name="reynoldsNumber_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="reynoldsNumber_Water" NumberOfComponents="1" format="ascii">
           0.888878 0.888878 0.888878 0.888878 0.888878 0.888878 0.888878 0.888878 0.888878 0.888878 0.888878 0.888878
           0.888878 0.888878 0.888878 0.888878 0.888878 0.888878 0.888878 0.888878 0.888878 0.888878 0.888878 0.888878
           0.888878 0.888878 0.888878 0.888878 0.888878 0.888878 0.888878 0.888878 0.888878 0.888878 0.888878 0.888878
@@ -307,7 +307,7 @@
           0.000357284 0.000356599 0.000355882 0.000355128 0.000354331 0.000353478 0.000352542 0.000351459 0.000350085 0.000348104 0.000344847 0.000338991
           0.000328164 0.000308687 0.00027604 0.000226887 0.000163183 9.82459e-05 6.74467e-05 6.74467e-05
         </DataArray>
-        <DataArray type="Float32" Name="nusseltNumber_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="nusseltNumber_Water" NumberOfComponents="1" format="ascii">
           3.23375 3.23375 3.23375 3.23375 3.23375 3.23375 3.23375 3.23375 3.23375 3.23375 3.23375 3.23375
           3.23375 3.23375 3.23375 3.23375 3.23375 3.23375 3.23375 3.23375 3.23375 3.23375 3.23375 3.23375
           3.23375 3.23375 3.23375 3.23375 3.23375 3.23375 3.23375 3.23375 3.23375 3.23375 3.23375 3.23375
@@ -326,7 +326,7 @@
           2.01132 2.0113 2.01129 2.01128 2.01126 2.01124 2.01123 2.01121 2.01118 2.01114 2.01108 2.01097
           2.01075 2.01037 2.00969 2.00862 2.00707 2.00522 2.00416 2.00416
         </DataArray>
-        <DataArray type="Float32" Name="prandtlNumber_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="prandtlNumber_Water" NumberOfComponents="1" format="ascii">
           1.74419 1.74419 1.74419 1.74419 1.74419 1.74419 1.74419 1.74419 1.74419 1.74419 1.74419 1.74419
           1.74419 1.74419 1.74419 1.74419 1.74419 1.74419 1.74419 1.74419 1.74419 1.74419 1.74419 1.74419
           1.74419 1.74419 1.74419 1.74419 1.74419 1.74419 1.74419 1.74419 1.74419 1.74419 1.74419 1.74419
@@ -345,7 +345,7 @@
           1.74419 1.74419 1.74419 1.74419 1.74419 1.74419 1.74419 1.74419 1.74419 1.74419 1.74419 1.74419
           1.74419 1.74419 1.74419 1.74419 1.74419 1.74419 1.74419 1.74419
         </DataArray>
-        <DataArray type="Float32" Name="reynoldsNumber_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="reynoldsNumber_Nitrogen" NumberOfComponents="1" format="ascii">
           0 0 0 0 0 0 0 0 0 0 0 0
           0 0 0 0 0 0 0 0 0 0 0 0
           0 0 0 0 0 0 0 0 0 0 0 0
@@ -364,7 +364,7 @@
           20.8219 20.8219 20.8219 20.8219 20.822 20.822 20.822 20.822 20.8221 20.8221 20.8221 20.8222
           20.8222 20.8222 20.8223 20.8223 20.8224 20.8224 20.8225 20.8225
         </DataArray>
-        <DataArray type="Float32" Name="nusseltNumber_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="nusseltNumber_Nitrogen" NumberOfComponents="1" format="ascii">
           2 2 2 2 2 2 2 2 2 2 2 2
           2 2 2 2 2 2 2 2 2 2 2 2
           2 2 2 2 2 2 2 2 2 2 2 2
@@ -383,7 +383,7 @@
           8.76243 8.76243 8.76244 8.76244 8.76245 8.76245 8.76245 8.76246 8.76247 8.76247 8.76248 8.76249
           8.76249 8.7625 8.76251 8.76251 8.76252 8.76253 8.76256 8.76256
         </DataArray>
-        <DataArray type="Float32" Name="prandtlNumber_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="prandtlNumber_Nitrogen" NumberOfComponents="1" format="ascii">
           0.983545 0.983545 0.983545 0.983545 0.983545 0.983545 0.983545 0.983545 0.983545 0.983545 0.983545 0.983545
           0.983545 0.983545 0.983545 0.983545 0.983545 0.983545 0.983545 0.983545 0.983545 0.983545 0.983545 0.983545
           0.983545 0.983545 0.983545 0.983545 0.983545 0.983545 0.983545 0.983545 0.983545 0.983545 0.983545 0.983545
@@ -403,8 +403,8 @@
           0.983545 0.983545 0.983545 0.983545 0.983545 0.983545 0.983545 0.983545
         </DataArray>
       </PointData>
-      <CellData Scalars="velocity_w (m/s)">
-        <DataArray type="Float32" Name="velocity_w (m/s)" NumberOfComponents="1" format="ascii">
+      <CellData Scalars="velocity_Water (m/s)">
+        <DataArray type="Float32" Name="velocity_Water (m/s)" NumberOfComponents="1" format="ascii">
           0.000478927 0.000478927 0.000478927 0.000478927 0.000478927 0.000478927 0.000478927 0.000478927 0.000478927 0.000478927 0.000478927 0.000478927
           0.000478927 0.000478927 0.000478927 0.000478927 0.000478927 0.000478927 0.000478927 0.000478927 0.000478927 0.000478927 0.000478927 0.000478927
           0.000478927 0.000478927 0.000478927 0.000478927 0.000478927 0.000478927 0.000478927 0.000478927 0.000478927 0.000478927 0.000478927 0.000478927
@@ -423,7 +423,7 @@
           -1.92505e-07 -1.92136e-07 -1.91749e-07 -1.91343e-07 -1.90913e-07 -1.90454e-07 -1.8995e-07 -1.89366e-07 -1.88626e-07 -1.87558e-07 -1.85803e-07 -1.82648e-07
           -1.76815e-07 -1.6632e-07 -1.4873e-07 -1.22247e-07 -8.79229e-08 -5.29349e-08 -3.63403e-08
         </DataArray>
-        <DataArray type="Float32" Name="velocity_n (m/s)" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="velocity_Nitrogen (m/s)" NumberOfComponents="1" format="ascii">
           0 0 0 0 0 0 0 0 0 0 0 0
           0 0 0 0 0 0 0 0 0 0 0 0
           0 0 0 0 0 0 0 0 0 0 0 0
diff --git a/test/references/evaporationatmosphere-reference.vtu b/test/references/evaporationatmosphere-reference.vtu
index 2a749f8f1e75da6b1062773da2e7e5eeaf6f40d5..182c0b072b77f02e8094d0b1efc4ce7961b303ef 100644
--- a/test/references/evaporationatmosphere-reference.vtu
+++ b/test/references/evaporationatmosphere-reference.vtu
@@ -2,8 +2,8 @@
 <VTKFile type="UnstructuredGrid" version="0.1" byte_order="LittleEndian">
   <UnstructuredGrid>
     <Piece NumberOfCells="420" NumberOfPoints="465">
-      <PointData Scalars="S_w" Vectors="velocity_w (m/s)">
-        <DataArray type="Float32" Name="S_w" NumberOfComponents="1" format="ascii">
+      <PointData Scalars="S_Water" Vectors="velocity_Water (m/s)">
+        <DataArray type="Float32" Name="S_Water" NumberOfComponents="1" format="ascii">
           0.826778 0.826778 0.802471 0.802471 0.826778 0.802471 0.826778 0.802471 0.826777 0.80247 0.826777 0.80247
           0.826776 0.802469 0.826776 0.802468 0.826775 0.802468 0.826774 0.802467 0.826774 0.802467 0.826773 0.802466
           0.826773 0.802466 0.826773 0.802466 0.826773 0.802465 0.800574 0.800574 0.800574 0.800573 0.800573 0.800572
@@ -44,7 +44,7 @@
           0.0001 0.0001 0.0001 0.0001 0.0001 0.0001 9.99972e-05 9.99972e-05 9.99972e-05 9.99972e-05 9.99972e-05 9.99972e-05
           9.99972e-05 9.99972e-05 9.99972e-05 9.99972e-05 9.99972e-05 9.99972e-05 9.99972e-05 9.99972e-05 0.0001
         </DataArray>
-        <DataArray type="Float32" Name="S_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="S_Nitrogen" NumberOfComponents="1" format="ascii">
           0.173222 0.173222 0.197529 0.197529 0.173222 0.197529 0.173222 0.197529 0.173223 0.19753 0.173223 0.19753
           0.173224 0.197531 0.173224 0.197532 0.173225 0.197532 0.173226 0.197533 0.173226 0.197533 0.173227 0.197534
           0.173227 0.197534 0.173227 0.197534 0.173227 0.197535 0.199426 0.199426 0.199426 0.199427 0.199427 0.199428
@@ -85,7 +85,7 @@
           0.9999 0.9999 0.9999 0.9999 0.9999 0.9999 0.9999 0.9999 0.9999 0.9999 0.9999 0.9999
           0.9999 0.9999 0.9999 0.9999 0.9999 0.9999 0.9999 0.9999 0.9999
         </DataArray>
-        <DataArray type="Float32" Name="p_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="p_Water" NumberOfComponents="1" format="ascii">
           98451.4 98451.3 98230.6 98230.5 98450.9 98230.1 98450.4 98229.6 98449.7 98228.9 98449 98228.2
           98448.2 98227.4 98447.4 98226.5 98446.5 98225.7 98445.7 98224.9 98444.9 98224.1 98444.2 98223.3
           98443.6 98222.7 98443.1 98222.3 98443 98222.1 98092.4 98092.2 98091.8 98091.3 98090.6 98089.8
@@ -126,7 +126,7 @@
           100004 100003 100002 100001 100000 100000 100012 100011 100010 100009 100008 100007
           100006 100005 100004 100003 100002 100001 100001 100000 100000
         </DataArray>
-        <DataArray type="Float32" Name="p_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="p_Nitrogen" NumberOfComponents="1" format="ascii">
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           100903 100709 100902 100708 100901 100707 100900 100706 100900 100706 100899 100705
           100898 100704 100898 100704 100898 100704 100576 100576 100575 100575 100574 100573
@@ -167,7 +167,7 @@
           100004 100003 100002 100001 100000 100000 100012 100011 100010 100009 100008 100007
           100006 100005 100004 100003 100002 100001 100001 100000 100000
         </DataArray>
-        <DataArray type="Float32" Name="rho_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="rho_Water" NumberOfComponents="1" format="ascii">
           998.232 998.232 998.232 998.232 998.232 998.232 998.232 998.232 998.232 998.232 998.232 998.232
           998.232 998.232 998.232 998.232 998.232 998.232 998.232 998.232 998.232 998.232 998.232 998.232
           998.232 998.232 998.232 998.232 998.232 998.232 998.232 998.232 998.232 998.232 998.232 998.232
@@ -208,7 +208,7 @@
           998.232 998.232 998.232 998.232 998.232 998.232 998.232 998.232 998.232 998.232 998.232 998.232
           998.232 998.232 998.232 998.232 998.232 998.232 998.232 998.232 998.232
         </DataArray>
-        <DataArray type="Float32" Name="rho_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="rho_Nitrogen" NumberOfComponents="1" format="ascii">
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           1.15077 1.14854 1.15076 1.14853 1.15075 1.14852 1.15074 1.14851 1.15073 1.1485 1.15072 1.14849
           1.15071 1.14848 1.15071 1.14848 1.15071 1.14848 1.14701 1.14701 1.147 1.147 1.14699 1.14698
@@ -249,7 +249,7 @@
           1.149 1.14899 1.14898 1.14897 1.14896 1.14896 1.1491 1.14908 1.14907 1.14906 1.14905 1.14904
           1.14903 1.14902 1.149 1.14899 1.14898 1.14897 1.14896 1.14896 1.14896
         </DataArray>
-        <DataArray type="Float32" Name="lambda_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="mob_Water" NumberOfComponents="1" format="ascii">
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           489.112 437.592 489.111 437.591 489.109 437.59 489.108 437.588 489.107 437.587 489.106 437.586
           489.105 437.586 489.104 437.585 489.104 437.585 433.75 433.75 433.749 433.749 433.748 433.746
@@ -290,7 +290,7 @@
           6.41311e-10 6.41311e-10 6.41311e-10 6.41311e-10 6.41311e-10 6.41311e-10 6.41255e-10 6.41255e-10 6.41255e-10 6.41255e-10 6.41255e-10 6.41255e-10
           6.41255e-10 6.41255e-10 6.41255e-10 6.41255e-10 6.41255e-10 6.41255e-10 6.41255e-10 6.41255e-10 6.41311e-10
         </DataArray>
-        <DataArray type="Float32" Name="lambda_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="mob_Nitrogen" NumberOfComponents="1" format="ascii">
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           483.912 710.492 483.917 710.498 483.922 710.505 483.926 710.511 483.931 710.517 483.935 710.522
           483.938 710.525 483.94 710.528 483.941 710.528 730.569 730.57 730.573 730.577 730.583 730.589
@@ -372,7 +372,7 @@
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           0.99 0.99 0.99 0.99 0.99 0.99 0.99 0.99 0.99
         </DataArray>
-        <DataArray type="Float32" Name="x^H2O_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="x^H2O_Water" NumberOfComponents="1" format="ascii">
           0.999988 0.999988 0.999988 0.999988 0.999988 0.999988 0.999988 0.999988 0.999988 0.999988 0.999988 0.999988
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           0.999988 0.999988 0.999988 0.999988 0.999988 0.999988 0.999988 0.999988 0.999988 0.999988 0.999988 0.999988
@@ -413,7 +413,7 @@
           0.999988 0.999988 0.999988 0.999988 0.999988 0.999988 0.999988 0.999988 0.999988 0.999988 0.999988 0.999988
           0.999988 0.999988 0.999988 0.999988 0.999988 0.999988 0.999988 0.999988 0.999988
         </DataArray>
-        <DataArray type="Float32" Name="x^N2_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="x^N2_Water" NumberOfComponents="1" format="ascii">
           1.22764e-05 1.22764e-05 1.22735e-05 1.22735e-05 1.22764e-05 1.22735e-05 1.22764e-05 1.22735e-05 1.22763e-05 1.22734e-05 1.22763e-05 1.22734e-05
           1.22763e-05 1.22734e-05 1.22763e-05 1.22734e-05 1.22763e-05 1.22733e-05 1.22762e-05 1.22733e-05 1.22762e-05 1.22733e-05 1.22762e-05 1.22733e-05
           1.22762e-05 1.22733e-05 1.22762e-05 1.22732e-05 1.22762e-05 1.22732e-05 1.22695e-05 1.22695e-05 1.22695e-05 1.22695e-05 1.22694e-05 1.22694e-05
@@ -454,7 +454,7 @@
           1.22526e-05 1.22526e-05 1.22526e-05 1.22526e-05 1.22526e-05 1.22526e-05 1.22526e-05 1.22526e-05 1.22526e-05 1.22526e-05 1.22526e-05 1.22526e-05
           1.22526e-05 1.22526e-05 1.22526e-05 1.22526e-05 1.22526e-05 1.22526e-05 1.22526e-05 1.22526e-05 1.22526e-05
         </DataArray>
-        <DataArray type="Float32" Name="x^H2O_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="x^H2O_Nitrogen" NumberOfComponents="1" format="ascii">
           0.0229976 0.0229976 0.0230419 0.0230419 0.0229977 0.023042 0.0229978 0.0230421 0.022998 0.0230423 0.0229982 0.0230424
           0.0229983 0.0230426 0.0229985 0.0230428 0.0229987 0.023043 0.0229989 0.0230432 0.0229991 0.0230434 0.0229993 0.0230435
           0.0229994 0.0230437 0.0229995 0.0230438 0.0229995 0.0230438 0.023073 0.0230731 0.0230732 0.0230733 0.0230735 0.0230736
@@ -495,7 +495,7 @@
           0.00232059 0.00232059 0.00232059 0.00232059 0.00232059 0.00232059 0.00232059 0.00232059 0.00232059 0.00232059 0.00232059 0.00232059
           0.00232059 0.00232059 0.00232059 0.00232059 0.00232059 0.00232059 0.00232059 0.00232059 0.00232059
         </DataArray>
-        <DataArray type="Float32" Name="x^N2_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="x^N2_Nitrogen" NumberOfComponents="1" format="ascii">
           0.977002 0.977002 0.976958 0.976958 0.977002 0.976958 0.977002 0.976958 0.977002 0.976958 0.977002 0.976958
           0.977002 0.976957 0.977001 0.976957 0.977001 0.976957 0.977001 0.976957 0.977001 0.976957 0.977001 0.976956
           0.977001 0.976956 0.977001 0.976956 0.977 0.976956 0.976927 0.976927 0.976927 0.976927 0.976927 0.976926
@@ -536,7 +536,7 @@
           0.997679 0.997679 0.997679 0.997679 0.997679 0.997679 0.997679 0.997679 0.997679 0.997679 0.997679 0.997679
           0.997679 0.997679 0.997679 0.997679 0.997679 0.997679 0.997679 0.997679 0.997679
         </DataArray>
-        <DataArray type="Float32" Name="T_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="T_Water" NumberOfComponents="1" format="ascii">
           293 293 293 293 293 293 293 293 293 293 293 293
           293 293 293 293 293 293 293 293 293 293 293 293
           293 293 293 293 293 293 293 293 293 293 293 293
@@ -577,7 +577,7 @@
           293 293 293 293 293 293 293 293 293 293 293 293
           293 293 293 293 293 293 293 293 293
         </DataArray>
-        <DataArray type="Float32" Name="T_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="T_Nitrogen" NumberOfComponents="1" format="ascii">
           293 293 293 293 293 293 293 293 293 293 293 293
           293 293 293 293 293 293 293 293 293 293 293 293
           293 293 293 293 293 293 293 293 293 293 293 293
@@ -659,7 +659,7 @@
           293 293 293 293 293 293 293 293 293 293 293 293
           293 293 293 293 293 293 293 293 293
         </DataArray>
-        <DataArray type="Float32" Name="reynoldsNumber_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="reynoldsNumber_Water" NumberOfComponents="1" format="ascii">
           0.00210154 0.0021015 0.00235722 0.00235713 0.0021014 0.00235694 0.00210129 0.00235674 0.00210121 0.00235658 0.00210114 0.00235647
           0.0021011 0.00235638 0.00210106 0.00235631 0.00210102 0.00235624 0.00210098 0.00235616 0.00210091 0.00235603 0.00210081 0.00235585
           0.00210065 0.00235557 0.00210049 0.00235527 0.00210042 0.00235512 0.0026347 0.00263452 0.00263414 0.00263377 0.00263347 0.00263325
@@ -700,7 +700,7 @@
           6.22631e-08 6.22639e-08 6.22658e-08 6.22706e-08 6.22861e-08 6.23236e-08 6.23051e-08 6.22685e-08 6.2261e-08 6.22604e-08 6.22601e-08 6.226e-08
           6.226e-08 6.226e-08 6.226e-08 6.22602e-08 6.22606e-08 6.22617e-08 6.22643e-08 6.22757e-08 6.23212e-08
         </DataArray>
-        <DataArray type="Float32" Name="nusseltNumber_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="nusseltNumber_Water" NumberOfComponents="1" format="ascii">
           2.05213 2.05213 2.05585 2.05585 2.05213 2.05584 2.05213 2.05584 2.05213 2.05584 2.05212 2.05584
           2.05212 2.05584 2.05212 2.05583 2.05212 2.05583 2.05212 2.05583 2.05212 2.05583 2.05212 2.05583
           2.05212 2.05582 2.05211 2.05582 2.05211 2.05582 2.0597 2.0597 2.0597 2.05969 2.05969 2.05968
@@ -741,7 +741,7 @@
           2.0001 2.0001 2.0001 2.0001 2.0001 2.0001 2.0001 2.0001 2.0001 2.0001 2.0001 2.0001
           2.0001 2.0001 2.0001 2.0001 2.0001 2.0001 2.0001 2.0001 2.0001
         </DataArray>
-        <DataArray type="Float32" Name="prandtlNumber_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="prandtlNumber_Water" NumberOfComponents="1" format="ascii">
           7.02294 7.02294 7.02295 7.02295 7.02294 7.02295 7.02294 7.02295 7.02294 7.02295 7.02294 7.02295
           7.02294 7.02295 7.02294 7.02295 7.02294 7.02295 7.02294 7.02295 7.02294 7.02295 7.02294 7.02295
           7.02294 7.02295 7.02294 7.02295 7.02294 7.02295 7.02295 7.02295 7.02295 7.02295 7.02295 7.02295
@@ -782,7 +782,7 @@
           7.02293 7.02293 7.02293 7.02293 7.02293 7.02293 7.02293 7.02293 7.02293 7.02293 7.02293 7.02293
           7.02293 7.02293 7.02293 7.02293 7.02293 7.02293 7.02293 7.02293 7.02293
         </DataArray>
-        <DataArray type="Float32" Name="reynoldsNumber_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="reynoldsNumber_Nitrogen" NumberOfComponents="1" format="ascii">
           0.000138994 0.000138997 0.000155125 0.000155134 0.000139004 0.000155153 0.000139012 0.000155172 0.000139019 0.000155188 0.000139023 0.000155199
           0.000139027 0.000155208 0.000139029 0.000155214 0.000139032 0.000155221 0.000139035 0.000155228 0.000139039 0.00015524 0.000139047 0.000155257
           0.000139057 0.000155284 0.000139069 0.000155313 0.000139074 0.000155327 0.000172335 0.000172355 0.000172396 0.000172438 0.00017247 0.000172493
@@ -823,7 +823,7 @@
           488.125 480.112 460.251 410.541 323.864 408.653 741.767 611.777 517.472 502.51 496.772 494.578
           493.522 492.611 491.006 487.235 477.855 454.201 395.929 222.451 337.512
         </DataArray>
-        <DataArray type="Float32" Name="nusseltNumber_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="nusseltNumber_Nitrogen" NumberOfComponents="1" format="ascii">
           2.00474 2.00474 2.00506 2.00506 2.00474 2.00506 2.00474 2.00506 2.00474 2.00506 2.00474 2.00506
           2.00474 2.00506 2.00474 2.00506 2.00474 2.00506 2.00474 2.00506 2.00474 2.00507 2.00474 2.00507
           2.00474 2.00507 2.00474 2.00507 2.00474 2.00507 2.00539 2.00539 2.00539 2.00539 2.0054 2.0054
@@ -864,7 +864,7 @@
           41.9185 41.524 40.5347 37.9807 33.2085 37.8813 53.3116 47.71 43.3416 42.6202 42.3412 42.2343
           42.1827 42.1382 42.0597 41.8748 41.4124 40.23 37.2067 26.9113 33.9911
         </DataArray>
-        <DataArray type="Float32" Name="prandtlNumber_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="prandtlNumber_Nitrogen" NumberOfComponents="1" format="ascii">
           0.701122 0.701122 0.701142 0.701142 0.701122 0.701142 0.701122 0.701142 0.701122 0.701142 0.701122 0.701142
           0.701122 0.701142 0.701122 0.701142 0.701122 0.701142 0.701122 0.701142 0.701122 0.701142 0.701122 0.701142
           0.701122 0.701142 0.701122 0.701142 0.701122 0.701142 0.701156 0.701156 0.701156 0.701156 0.701156 0.701156
@@ -905,7 +905,7 @@
           0.691811 0.691811 0.691811 0.691811 0.691811 0.691811 0.691811 0.691811 0.691811 0.691811 0.691811 0.691811
           0.691811 0.691811 0.691811 0.691811 0.691811 0.691811 0.691811 0.691811 0.691811
         </DataArray>
-        <DataArray type="Float32" Name="velocity_w (m/s)" NumberOfComponents="3" format="ascii">
+        <DataArray type="Float32" Name="velocity_Water (m/s)" NumberOfComponents="3" format="ascii">
           8.67434e-09 -2.1172e-05 0 1.6596e-08 -2.11716e-05 0 8.04171e-09 -2.37478e-05 0 1.52964e-08 -2.37469e-05 0
           3.07023e-08 -2.11705e-05 0 2.80863e-08 -2.3745e-05 0 4.12191e-08 -2.11694e-05 0 3.74271e-08 -2.3743e-05 0
           4.83799e-08 -2.11686e-05 0 4.36927e-08 -2.37414e-05 0 5.29412e-08 -2.11679e-05 0 4.76527e-08 -2.37402e-05 0
@@ -1024,7 +1024,7 @@
           8.06468e-15 -6.27244e-12 0 7.66374e-15 -6.27255e-12 0 6.66777e-15 -6.27281e-12 0 3.3973e-15 -6.27397e-12 0
           8.35171e-16 -6.27855e-12 0
         </DataArray>
-        <DataArray type="Float32" Name="velocity_n (m/s)" NumberOfComponents="3" format="ascii">
+        <DataArray type="Float32" Name="velocity_Nitrogen (m/s)" NumberOfComponents="3" format="ascii">
           8.57643e-09 2.10005e-05 0 1.64083e-08 2.1001e-05 0 1.30484e-08 2.34834e-05 0 2.4819e-08 2.34847e-05 0
           3.0354e-08 2.10022e-05 0 4.5569e-08 2.34876e-05 0 4.07501e-08 2.10035e-05 0 6.07216e-08 2.34907e-05 0
           4.78284e-08 2.10046e-05 0 7.08847e-08 2.34932e-05 0 5.23371e-08 2.10055e-05 0 7.7308e-08 2.34951e-05 0
diff --git a/test/references/fracturebox2p-reference.vtu b/test/references/fracturebox2p-reference.vtu
index c863d3de6508b980e219ad30c9fee88cda1ef827..ca40c0131a0b3de7da190fc45f1090a7c25ab568 100644
--- a/test/references/fracturebox2p-reference.vtu
+++ b/test/references/fracturebox2p-reference.vtu
@@ -2,8 +2,8 @@
 <VTKFile type="UnstructuredGrid" version="0.1" byte_order="LittleEndian">
   <UnstructuredGrid>
     <Piece NumberOfCells="1670" NumberOfPoints="911">
-      <PointData Scalars="S_n">
-        <DataArray type="Float32" Name="S_n" NumberOfComponents="1" format="ascii">
+      <PointData Scalars="S_liqTrichloroethene">
+        <DataArray type="Float32" Name="S_liqTrichloroethene" NumberOfComponents="1" format="ascii">
           0.778389 0.771142 0.770769 0.835725 0.822641 0.836217 0.822475 0.691403 0.691088 0.718574 0.691575 0.719125
           0.718643 0.71905 0.835559 0.836051 0.822441 0.691188 0.822277 0.762152 0.798585 0.794582 0.789227 0.759674
           0.753064 0.748061 0.779304 0.766754 0.786095 0.778296 0.790016 0.807905 0.805752 0.741771 0.779231 0.778465
@@ -81,7 +81,7 @@
           0.606908 0.668479 0.668571 0.596279 0.641588 0.620107 0.597574 0.667041 0.586604 0.680184 0.597205 0.667403
           0.667498 0.597236 0.680296 0.586645 0.605886 0.585055 0.647215 0.614923 0.681927 0.601 0.607809
         </DataArray>
-        <DataArray type="Float32" Name="S_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="S_liqSimpleH2O" NumberOfComponents="1" format="ascii">
           0.221611 0.228857 0.229231 0.164275 0.177359 0.163783 0.177525 0.308597 0.308912 0.281426 0.308425 0.280875
           0.281357 0.28095 0.164441 0.163949 0.177559 0.308812 0.177723 0.237848 0.201415 0.205418 0.210773 0.240326
           0.246936 0.251939 0.220696 0.233246 0.213905 0.221704 0.209984 0.192095 0.194248 0.258229 0.220769 0.221535
@@ -159,7 +159,7 @@
           0.393092 0.331521 0.331429 0.403721 0.358412 0.379893 0.402426 0.332959 0.413396 0.319816 0.402795 0.332597
           0.332502 0.402764 0.319704 0.413355 0.394114 0.414945 0.352785 0.385077 0.318073 0.399 0.392191
         </DataArray>
-        <DataArray type="Float32" Name="p_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="p_liqTrichloroethene" NumberOfComponents="1" format="ascii">
           100514 100501 100500 100610 100592 100610 100592 100409 100408 100431 100409 100431
           100431 100431 100610 100610 100592 100408 100592 100486 100552 100545 100535 100481
           100472 100464 100516 100494 100528 100514 100536 100569 100565 100456 100516 100514
@@ -237,7 +237,7 @@
           100368 100400 100400 100362 100387 100376 100362 100399 100356 100404 100362 100399
           100399 100362 100404 100356 100367 100355 100390 100373 100405 100364 100368
         </DataArray>
-        <DataArray type="Float32" Name="p_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="p_liqSimpleH2O" NumberOfComponents="1" format="ascii">
           100096 100088 100088 100138 100135 100138 100135 100041 100041 100050 100041 100050
           100050 100050 100138 100138 100135 100041 100135 100079 100118 100114 100108 100076
           100071 100067 100097 100084 100104 100096 100109 100126 100124 100062 100097 100096
@@ -393,7 +393,7 @@
           332.447 356.77 356.81 328.664 345.58 337.295 329.119 356.145 325.304 361.976 328.989 356.302
           356.343 329 362.026 325.319 332.079 324.774 347.841 335.37 362.77 330.332 332.773
         </DataArray>
-        <DataArray type="Float32" Name="rho_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="rho_liqSimpleH2O" NumberOfComponents="1" format="ascii">
           1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000
           1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000
           1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000
@@ -471,7 +471,7 @@
           1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000
           1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000
         </DataArray>
-        <DataArray type="Float32" Name="rho_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="rho_liqTrichloroethene" NumberOfComponents="1" format="ascii">
           1460 1460 1460 1460 1460 1460 1460 1460 1460 1460 1460 1460
           1460 1460 1460 1460 1460 1460 1460 1460 1460 1460 1460 1460
           1460 1460 1460 1460 1460 1460 1460 1460 1460 1460 1460 1460
@@ -549,7 +549,7 @@
           1460 1460 1460 1460 1460 1460 1460 1460 1460 1460 1460 1460
           1460 1460 1460 1460 1460 1460 1460 1460 1460 1460 1460
         </DataArray>
-        <DataArray type="Float32" Name="mob_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="mob_liqSimpleH2O" NumberOfComponents="1" format="ascii">
           3.49546 3.96948 3.99501 1.00467 1.40006 0.9915 1.40567 12.3886 12.4353 8.78542 12.363 8.72094
           8.77732 8.72964 1.00914 0.995942 1.40681 12.4205 1.41237 4.61613 2.37957 2.57797 2.86055 4.8062
           5.33908 5.76827 3.43848 4.27685 3.03521 3.50124 2.81765 1.95822 2.05066 6.3404 3.443 3.49067
@@ -627,7 +627,7 @@
           29.8913 16.1262 16.1099 32.8917 21.4237 26.4373 32.5154 16.3838 35.8 14.1332 32.6225 16.3186
           16.3017 32.6133 14.115 35.7872 30.1711 36.2817 20.2285 27.7588 13.8518 31.5343 29.646
         </DataArray>
-        <DataArray type="Float32" Name="mob_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="mob_liqTrichloroethene" NumberOfComponents="1" format="ascii">
           1357.4 1338.46 1337.48 1504.94 1471.78 1506.17 1471.36 1129.2 1128.38 1200.41 1129.65 1201.85
           1200.59 1201.66 1504.52 1505.76 1471.27 1128.64 1470.86 1314.9 1409.95 1399.57 1385.66 1308.4
           1291.05 1277.91 1359.79 1326.96 1377.5 1357.16 1387.71 1434.02 1428.47 1261.38 1359.6 1357.6
diff --git a/test/references/fracturebox2p_gravity-reference.vtu b/test/references/fracturebox2p_gravity-reference.vtu
index 559a51f516f24f01a0567ff28ac36ff14506cf4c..ce9d13822ae60e52f02d4ebeb0c65acaca6c78cd 100644
--- a/test/references/fracturebox2p_gravity-reference.vtu
+++ b/test/references/fracturebox2p_gravity-reference.vtu
@@ -159,7 +159,7 @@
           0 84.4586 0 0 0 668.623 0 0 0 111.917 0 419.154
           0 273.647 0 0 0 0 0 370.189 0.0184311 0 0
         </DataArray>
-        <DataArray type="Float32" Name="S_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="S_liqSimpleH2O" NumberOfComponents="1" format="ascii">
           0.985911 0.991023 0.994774 0.064309 0.0710217 0.0721382 0.0628829 0.0724153 0.301859 0.151616 1 1
           1 0.0666443 0.881175 0.797098 0.933311 1 0.998527 0.996558 0.940496 0.937048 0.974003 0.998074
           0.998601 0.999671 0.969717 0.932984 0.99032 0.996164 0.991409 0.903548 0.884529 0.999599 0.999887 0.353607
@@ -237,7 +237,7 @@
           1 0.994536 1 1 1 0.0829154 1 1 1 0.988303 1 0.22048
           1 0.587802 1 1 1 1 1 0.302348 0.999999 1 1
         </DataArray>
-        <DataArray type="Float32" Name="p_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="p_liqSimpleH2O" NumberOfComponents="1" format="ascii">
           96470.1 97035.4 95856.9 101208 99844.3 99879 101159 100518 99467.2 99491.6 90727.9 90713.4
           91690.9 100593 90685 91665.9 91664.8 91705.8 90685.1 96239.1 96291.3 96986.2 95941.4 95008.6
           95625.5 94553.3 97502.3 97980.1 94112.1 93653.1 93183 95654.6 96822.4 95549.2 92797 98376.6
@@ -315,7 +315,7 @@
           92641.2 98769.9 92360 98703.4 90663.2 100430 96209.1 94856.7 92406.9 98675.8 91429.3 99670.2
           91474.6 99599.3 92466.5 98592.5 94554.7 94030 91319.4 99765.8 97016 93943 93538.6
         </DataArray>
-        <DataArray type="Float32" Name="rho_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="rho_liqSimpleH2O" NumberOfComponents="1" format="ascii">
           1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000
           1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000
           1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000
@@ -393,7 +393,7 @@
           1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000
           1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000
         </DataArray>
-        <DataArray type="Float32" Name="mob_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="mob_liqSimpleH2O" NumberOfComponents="1" format="ascii">
           982.073 992.479 997.391 0.00178831 0.00576332 0.00674626 0.00129942 0.00700648 11.4152 0.7016 1000 1000
           1000 0.00283248 552.044 375.292 736.091 1000 999.788 998.855 774.908 756.117 943.697 999.638
           999.809 999.989 925.917 734.358 991.293 998.582 993.095 610.902 560.487 999.984 999.999 20.4
@@ -471,7 +471,7 @@
           1000 997.152 1000 1000 1000 0.0225595 1000 1000 1000 987.449 1000 3.42512
           1000 124.807 1000 1000 1000 1000 1000 11.484 1000 1000 1000
         </DataArray>
-        <DataArray type="Float32" Name="S_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="S_liqTrichloroethene" NumberOfComponents="1" format="ascii">
           0.0140886 0.00897702 0.00522575 0.935691 0.928978 0.927862 0.937117 0.927585 0.698141 0.848384 0 0
           0 0.933356 0.118825 0.202902 0.0666888 0 0.00147278 0.00344235 0.0595043 0.0629519 0.0259972 0.0019264
           0.00139872 0.000329274 0.0302833 0.0670164 0.00968001 0.00383611 0.00859094 0.0964522 0.115471 0.000401127 0.000113032 0.646393
@@ -549,7 +549,7 @@
           0 0.0054639 0 -0 0 0.917085 -0 -3.22299e-44 0 0.0116972 0 0.77952
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diff --git a/test/references/fracturecc2p-reference.vtu b/test/references/fracturecc2p-reference.vtu
index 91a85d2b0e68a8955591cf46498d28520adeff4e..18a00318053f2c8e34483407909aafc76b7582ec 100644
--- a/test/references/fracturecc2p-reference.vtu
+++ b/test/references/fracturecc2p-reference.vtu
@@ -2,8 +2,8 @@
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-      <CellData Scalars="S_n">
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diff --git a/test/references/fracturecc2p_gravity-reference.vtu b/test/references/fracturecc2p_gravity-reference.vtu
index 734246274ca2e8e01d9fee5eb44947c8d685b6aa..44f8007a269b34473882a8861fdb6c8adca30187 100644
--- a/test/references/fracturecc2p_gravity-reference.vtu
+++ b/test/references/fracturecc2p_gravity-reference.vtu
@@ -287,7 +287,7 @@
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diff --git a/test/references/fractureccmpfa2p-reference.vtu b/test/references/fractureccmpfa2p-reference.vtu
index 384b36223c45577fff95b666684ebab1c5f1def7..ad9a45da0e0bc5736beef693c63c41e22cb2da74 100644
--- a/test/references/fractureccmpfa2p-reference.vtu
+++ b/test/references/fractureccmpfa2p-reference.vtu
@@ -2,8 +2,8 @@
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+      <CellData Scalars="S_liqTrichloroethene">
+        <DataArray type="Float32" Name="S_liqTrichloroethene" NumberOfComponents="1" format="ascii">
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diff --git a/test/references/fractureccmpfa2p_gravity-reference.vtu b/test/references/fractureccmpfa2p_gravity-reference.vtu
index a47d62de5fb86fe852274f4abffa4281fb240079..4753f3316a20bda8ada0823216ff96b97760bbe6 100644
--- a/test/references/fractureccmpfa2p_gravity-reference.vtu
+++ b/test/references/fractureccmpfa2p_gravity-reference.vtu
@@ -287,7 +287,7 @@
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@@ -997,7 +997,7 @@
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-        <DataArray type="Float32" Name="p_n" NumberOfComponents="1" format="ascii">
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-        <DataArray type="Float32" Name="rho_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="rho_liqTrichloroethene" NumberOfComponents="1" format="ascii">
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         </DataArray>
-        <DataArray type="Float32" Name="mob_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="mob_liqTrichloroethene" NumberOfComponents="1" format="ascii">
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diff --git a/test/references/infiltration3pbox-reference.vtu b/test/references/infiltration3pbox-reference.vtu
index 5ccc1ca0962831ff9b7a3223818e146044f7e965..c232d691ce5195ab581f2c7ff81d364e2fd3f8bc 100644
--- a/test/references/infiltration3pbox-reference.vtu
+++ b/test/references/infiltration3pbox-reference.vtu
@@ -2,8 +2,8 @@
 <VTKFile type="UnstructuredGrid" version="0.1" byte_order="LittleEndian">
   <UnstructuredGrid>
     <Piece NumberOfCells="500" NumberOfPoints="561">
-      <PointData Scalars="S_w">
-        <DataArray type="Float32" Name="S_w" NumberOfComponents="1" format="ascii">
+      <PointData Scalars="S_Water">
+        <DataArray type="Float32" Name="S_Water" NumberOfComponents="1" format="ascii">
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@@ -52,7 +52,7 @@
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-        <DataArray type="Float32" Name="S_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="S_mesitylene" NumberOfComponents="1" format="ascii">
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@@ -150,7 +150,7 @@
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-        <DataArray type="Float32" Name="p_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="p_Water" NumberOfComponents="1" format="ascii">
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@@ -199,7 +199,7 @@
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-        <DataArray type="Float32" Name="p_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="p_mesitylene" NumberOfComponents="1" format="ascii">
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@@ -248,7 +248,7 @@
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+        <DataArray type="Float32" Name="p_Air" NumberOfComponents="1" format="ascii">
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@@ -297,7 +297,7 @@
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+        <DataArray type="Float32" Name="rho_Water" NumberOfComponents="1" format="ascii">
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           999.724 999.719 999.724 999.719 999.724 999.719 999.724 999.719 999.724 999.719 999.724 999.719
@@ -346,7 +346,7 @@
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           999.695 999.695 999.695 999.695 999.695 999.695 999.695 999.695 999.695
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-        <DataArray type="Float32" Name="rho_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="rho_mesitylene" NumberOfComponents="1" format="ascii">
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           878.771 878.771 878.771 878.771 878.771 878.771 878.771 878.771 878.771 878.771 878.771 878.771
@@ -395,7 +395,7 @@
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-        <DataArray type="Float32" Name="rho_g" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="rho_Air" NumberOfComponents="1" format="ascii">
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           1.83371 1.71307 1.83377 1.71313 1.83385 1.71321 1.83395 1.71331 1.83405 1.71341 1.83404 1.7134
diff --git a/test/references/infiltration3pcc-reference.vtu b/test/references/infiltration3pcc-reference.vtu
index b6e9cc957fdda3dc36e8b3e497c35d126071ab88..cd0d5f20fbe1a9876770ad371e245c756b214e84 100644
--- a/test/references/infiltration3pcc-reference.vtu
+++ b/test/references/infiltration3pcc-reference.vtu
@@ -2,8 +2,8 @@
 <VTKFile type="UnstructuredGrid" version="0.1" byte_order="LittleEndian">
   <UnstructuredGrid>
     <Piece NumberOfCells="500" NumberOfPoints="561">
-      <CellData Scalars="S_w">
-        <DataArray type="Float32" Name="S_w" NumberOfComponents="1" format="ascii">
+      <CellData Scalars="S_Water">
+        <DataArray type="Float32" Name="S_Water" NumberOfComponents="1" format="ascii">
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-        <DataArray type="Float32" Name="S_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="S_mesitylene" NumberOfComponents="1" format="ascii">
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+        <DataArray type="Float32" Name="p_Water" NumberOfComponents="1" format="ascii">
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-        <DataArray type="Float32" Name="p_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="p_mesitylene" NumberOfComponents="1" format="ascii">
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-        <DataArray type="Float32" Name="p_g" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="p_Air" NumberOfComponents="1" format="ascii">
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@@ -267,7 +267,7 @@
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-        <DataArray type="Float32" Name="rho_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="rho_Water" NumberOfComponents="1" format="ascii">
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           999.695 999.695 999.695 999.695 999.695 999.695 999.695 999.695
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-        <DataArray type="Float32" Name="rho_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="rho_mesitylene" NumberOfComponents="1" format="ascii">
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@@ -355,7 +355,7 @@
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-        <DataArray type="Float32" Name="rho_g" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="rho_Air" NumberOfComponents="1" format="ascii">
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diff --git a/test/references/infiltrationbox-reference.vtu b/test/references/infiltrationbox-reference.vtu
index 18fdd77e20f251a5ee13c50d330fa530ac3ad233..aa6bf7876baefd3db20b35cdc50086bf1600c127 100644
--- a/test/references/infiltrationbox-reference.vtu
+++ b/test/references/infiltrationbox-reference.vtu
@@ -2,8 +2,8 @@
 <VTKFile type="UnstructuredGrid" version="0.1" byte_order="LittleEndian">
   <UnstructuredGrid>
     <Piece NumberOfCells="160" NumberOfPoints="205">
-      <PointData Scalars="S_w">
-        <DataArray type="Float32" Name="S_w" NumberOfComponents="1" format="ascii">
+      <PointData Scalars="S_Water">
+        <DataArray type="Float32" Name="S_Water" NumberOfComponents="1" format="ascii">
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@@ -23,7 +23,7 @@
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-        <DataArray type="Float32" Name="S_n" NumberOfComponents="1" format="ascii">
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@@ -43,7 +43,7 @@
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@@ -63,7 +63,7 @@
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@@ -83,7 +83,7 @@
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+        <DataArray type="Float32" Name="p_NAPL" NumberOfComponents="1" format="ascii">
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           878.771 878.771 878.771 878.771 878.771 878.771 878.771 878.771 878.771 878.771 878.771 878.771
@@ -163,7 +163,7 @@
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           878.771
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-        <DataArray type="Float32" Name="rho_g" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="rho_Air" NumberOfComponents="1" format="ascii">
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@@ -183,7 +183,7 @@
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           1.22442
         </DataArray>
-        <DataArray type="Float32" Name="x^H2O_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="x^H2O_Water" NumberOfComponents="1" format="ascii">
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           0.999973 0.999977 0.999973 0.999977 0.999973 0.999977 0.999973 0.999977 0.999973 0.999977 0.999973 0.999977
@@ -203,7 +203,7 @@
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           0.999982
         </DataArray>
-        <DataArray type="Float32" Name="x^mesitylene_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="x^mesitylene_Water" NumberOfComponents="1" format="ascii">
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@@ -223,7 +223,7 @@
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           3.02334e-09
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-        <DataArray type="Float32" Name="x^Air_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="x^Air_Water" NumberOfComponents="1" format="ascii">
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@@ -243,7 +243,7 @@
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           1.81888e-05
         </DataArray>
-        <DataArray type="Float32" Name="x^H2O_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="x^H2O_NAPL" NumberOfComponents="1" format="ascii">
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           1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10
           1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10
@@ -263,7 +263,7 @@
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           1e-10
         </DataArray>
-        <DataArray type="Float32" Name="x^mesitylene_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="x^mesitylene_NAPL" NumberOfComponents="1" format="ascii">
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@@ -283,7 +283,7 @@
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         </DataArray>
-        <DataArray type="Float32" Name="x^Air_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="x^Air_NAPL" NumberOfComponents="1" format="ascii">
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           1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10
           1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10
@@ -303,7 +303,7 @@
           1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10
           1e-10
         </DataArray>
-        <DataArray type="Float32" Name="x^H2O_g" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="x^H2O_Air" NumberOfComponents="1" format="ascii">
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@@ -323,7 +323,7 @@
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           0.0122818
         </DataArray>
-        <DataArray type="Float32" Name="x^mesitylene_g" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="x^mesitylene_Air" NumberOfComponents="1" format="ascii">
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@@ -343,7 +343,7 @@
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           1e-06
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-        <DataArray type="Float32" Name="x^Air_g" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="x^Air_Air" NumberOfComponents="1" format="ascii">
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diff --git a/test/references/infiltrationcc-reference.vtu b/test/references/infiltrationcc-reference.vtu
index 75f09eff69b7d44c42ce1237c4b2bb69f65efd34..549460779fc583dafa7e36fc8b5901698bb1bfaa 100644
--- a/test/references/infiltrationcc-reference.vtu
+++ b/test/references/infiltrationcc-reference.vtu
@@ -2,8 +2,8 @@
 <VTKFile type="UnstructuredGrid" version="0.1" byte_order="LittleEndian">
   <UnstructuredGrid>
     <Piece NumberOfCells="160" NumberOfPoints="205">
-      <CellData Scalars="S_w">
-        <DataArray type="Float32" Name="S_w" NumberOfComponents="1" format="ascii">
+      <CellData Scalars="S_Water">
+        <DataArray type="Float32" Name="S_Water" NumberOfComponents="1" format="ascii">
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           0.97 0.97 0.97 0.97 0.97 0.97 0.97 0.97 0.97 0.97 0.97 0.97
@@ -19,7 +19,7 @@
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           0.12 0.12 0.12 0.12
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-        <DataArray type="Float32" Name="S_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="S_NAPL" NumberOfComponents="1" format="ascii">
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@@ -35,7 +35,7 @@
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-        <DataArray type="Float32" Name="S_g" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="S_Air" NumberOfComponents="1" format="ascii">
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           0.0300003 0.0300003 0.0300002 0.0300002 0.0300002 0.0300002 0.0300002 0.0300002 0.0300001 0.0300001 0.0300001 0.0300001
@@ -51,7 +51,7 @@
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           0.88 0.88 0.88 0.88
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-        <DataArray type="Float32" Name="p_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="p_Water" NumberOfComponents="1" format="ascii">
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@@ -67,7 +67,7 @@
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-        <DataArray type="Float32" Name="p_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="p_NAPL" NumberOfComponents="1" format="ascii">
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@@ -83,7 +83,7 @@
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-        <DataArray type="Float32" Name="p_g" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="p_Air" NumberOfComponents="1" format="ascii">
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@@ -99,7 +99,7 @@
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-        <DataArray type="Float32" Name="rho_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="rho_Water" NumberOfComponents="1" format="ascii">
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@@ -115,7 +115,7 @@
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-        <DataArray type="Float32" Name="rho_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="rho_NAPL" NumberOfComponents="1" format="ascii">
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@@ -131,7 +131,7 @@
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           878.771 878.771 878.771 878.771
         </DataArray>
-        <DataArray type="Float32" Name="rho_g" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="rho_Air" NumberOfComponents="1" format="ascii">
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@@ -147,7 +147,7 @@
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         </DataArray>
-        <DataArray type="Float32" Name="x^H2O_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="x^H2O_Water" NumberOfComponents="1" format="ascii">
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@@ -163,7 +163,7 @@
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-        <DataArray type="Float32" Name="x^mesitylene_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="x^mesitylene_Water" NumberOfComponents="1" format="ascii">
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@@ -179,7 +179,7 @@
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           3.02297e-09 3.02295e-09 3.02294e-09 3.02293e-09
         </DataArray>
-        <DataArray type="Float32" Name="x^Air_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="x^Air_Water" NumberOfComponents="1" format="ascii">
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@@ -195,7 +195,7 @@
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           1.81866e-05 1.81864e-05 1.81863e-05 1.81862e-05
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-        <DataArray type="Float32" Name="x^H2O_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="x^H2O_NAPL" NumberOfComponents="1" format="ascii">
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           1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10
@@ -211,7 +211,7 @@
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         </DataArray>
-        <DataArray type="Float32" Name="x^mesitylene_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="x^mesitylene_NAPL" NumberOfComponents="1" format="ascii">
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@@ -227,7 +227,7 @@
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         </DataArray>
-        <DataArray type="Float32" Name="x^Air_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="x^Air_NAPL" NumberOfComponents="1" format="ascii">
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           1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10
           1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10
@@ -243,7 +243,7 @@
           1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10 1e-10
           1e-10 1e-10 1e-10 1e-10
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-        <DataArray type="Float32" Name="x^H2O_g" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="x^H2O_Air" NumberOfComponents="1" format="ascii">
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@@ -259,7 +259,7 @@
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           0.0122833 0.0122834 0.0122835 0.0122836
         </DataArray>
-        <DataArray type="Float32" Name="x^mesitylene_g" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="x^mesitylene_Air" NumberOfComponents="1" format="ascii">
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@@ -275,7 +275,7 @@
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           9.99999e-07 1e-06 1e-06 1.00001e-06
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-        <DataArray type="Float32" Name="x^Air_g" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="x^Air_Air" NumberOfComponents="1" format="ascii">
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diff --git a/test/references/injection2pnibox-cube-reference.vtu b/test/references/injection2pnibox-cube-reference.vtu
index 0a52c815382885c8489191aaae80daaa45cbc295..cfddfc2d8de41507315d7027abaa646048385aa6 100644
--- a/test/references/injection2pnibox-cube-reference.vtu
+++ b/test/references/injection2pnibox-cube-reference.vtu
@@ -2,8 +2,8 @@
 <VTKFile type="UnstructuredGrid" version="0.1" byte_order="LittleEndian">
   <UnstructuredGrid>
     <Piece NumberOfCells="384" NumberOfPoints="425">
-      <PointData Scalars="S_w">
-        <DataArray type="Float32" Name="S_w" NumberOfComponents="1" format="ascii">
+      <PointData Scalars="S_Water">
+        <DataArray type="Float32" Name="S_Water" NumberOfComponents="1" format="ascii">
           1 1 1 1 1 1 1 1 1 1 1 1
           1 1 1 1 1 1 1 1 1 1 1 1
           1 1 1 1 1 1 1 1 1 1 1 1
@@ -41,7 +41,7 @@
           1 1 1 1 1 1 1 1 1 1 1 1
           1 1 1 1 1
         </DataArray>
-        <DataArray type="Float32" Name="S_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="S_Nitrogen" NumberOfComponents="1" format="ascii">
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           0 0 0 0 0 0 0 0 0 0 0 0
           0 0 0 0 0 0 0 0 0 0 0 0
@@ -79,7 +79,7 @@
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           -0 -0 -0 -0 -0
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-        <DataArray type="Float32" Name="p_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="p_Water" NumberOfComponents="1" format="ascii">
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           2.65904e+07 2.65664e+07 2.65912e+07 2.65673e+07 2.65921e+07 2.65681e+07 2.6593e+07 2.6569e+07 2.65939e+07 2.65699e+07 2.65948e+07 2.65708e+07
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@@ -117,7 +117,7 @@
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           2.62178e+07 2.62182e+07 2.62185e+07 2.62187e+07 2.62188e+07
         </DataArray>
-        <DataArray type="Float32" Name="p_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="p_Nitrogen" NumberOfComponents="1" format="ascii">
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           2.66058e+07 2.65818e+07 2.66068e+07 2.65829e+07 2.66079e+07 2.65839e+07 2.66089e+07 2.6585e+07 2.661e+07 2.6586e+07 2.6611e+07 2.65871e+07
@@ -193,7 +193,7 @@
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           10000 10000 10000 10000 10000
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-        <DataArray type="Float32" Name="rho_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="rho_Water" NumberOfComponents="1" format="ascii">
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           976.465 976.503 976.465 976.503 976.466 976.504 976.466 976.504 976.466 976.505 976.467 976.505
@@ -231,7 +231,7 @@
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           977.081 977.082 977.082 977.082 977.082
         </DataArray>
-        <DataArray type="Float32" Name="rho_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="rho_Nitrogen" NumberOfComponents="1" format="ascii">
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           246.267 246.096 246.276 246.105 246.286 246.115 246.296 246.125 246.305 246.134 246.315 246.144
@@ -269,7 +269,7 @@
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           243.571 243.575 243.577 243.579 243.58
         </DataArray>
-        <DataArray type="Float32" Name="mob_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="mob_Water" NumberOfComponents="1" format="ascii">
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           3141.3 3138.73 3141.3 3138.73 3141.3 3138.73 3141.3 3138.72 3141.29 3138.72 3141.29 3138.72
@@ -307,7 +307,7 @@
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           3100.57 3100.57 3100.57 3100.57 3100.57
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-        <DataArray type="Float32" Name="mob_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="mob_Nitrogen" NumberOfComponents="1" format="ascii">
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diff --git a/test/references/injection2pnibox-simplex-reference.vtu b/test/references/injection2pnibox-simplex-reference.vtu
index 9431df94843a43444304722014aa7c3844e13ae9..eaf7c1392b9576b6a25a6217a867721e9c9c5363 100644
--- a/test/references/injection2pnibox-simplex-reference.vtu
+++ b/test/references/injection2pnibox-simplex-reference.vtu
@@ -2,8 +2,8 @@
 <VTKFile type="UnstructuredGrid" version="0.1" byte_order="LittleEndian">
   <UnstructuredGrid>
     <Piece NumberOfCells="768" NumberOfPoints="425">
-      <PointData Scalars="S_w">
-        <DataArray type="Float32" Name="S_w" NumberOfComponents="1" format="ascii">
+      <PointData Scalars="S_Water">
+        <DataArray type="Float32" Name="S_Water" NumberOfComponents="1" format="ascii">
           1 1 1 1 1 1 1 1 1 1 1 1
           1 1 1 1 1 1 1 1 1 1 1 1
           1 1 1 1 1 1 1 1 1 1 1 1
@@ -41,7 +41,7 @@
           1 1 1 1 1 1 1 1 1 1 1 1
           1 1 1 1 1
         </DataArray>
-        <DataArray type="Float32" Name="S_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="S_Nitrogen" NumberOfComponents="1" format="ascii">
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           0 0 0 0 0 0 0 0 0 0 0 0
           0 0 0 0 0 0 0 0 0 0 0 0
@@ -79,7 +79,7 @@
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           -0 -0 -0 -0 -0
         </DataArray>
-        <DataArray type="Float32" Name="p_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="p_Water" NumberOfComponents="1" format="ascii">
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           2.65904e+07 2.65664e+07 2.65912e+07 2.65673e+07 2.65921e+07 2.65681e+07 2.6593e+07 2.6569e+07 2.65939e+07 2.65699e+07 2.65948e+07 2.65708e+07
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@@ -117,7 +117,7 @@
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           2.62179e+07 2.62183e+07 2.62186e+07 2.62187e+07 2.62188e+07
         </DataArray>
-        <DataArray type="Float32" Name="p_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="p_Nitrogen" NumberOfComponents="1" format="ascii">
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@@ -193,7 +193,7 @@
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           10000 10000 10000 10000 10000
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-        <DataArray type="Float32" Name="rho_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="rho_Water" NumberOfComponents="1" format="ascii">
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@@ -231,7 +231,7 @@
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-        <DataArray type="Float32" Name="rho_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="rho_Nitrogen" NumberOfComponents="1" format="ascii">
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@@ -269,7 +269,7 @@
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-        <DataArray type="Float32" Name="mob_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="mob_Water" NumberOfComponents="1" format="ascii">
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@@ -307,7 +307,7 @@
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-        <DataArray type="Float32" Name="mob_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="mob_Nitrogen" NumberOfComponents="1" format="ascii">
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diff --git a/test/references/injection2pnicc-cube-reference.vtu b/test/references/injection2pnicc-cube-reference.vtu
index 8c1e918945d9d5f74c8ab4851f884a17f4c868f8..8db4852d31fb37e457c41ee8fb118ea326148b01 100644
--- a/test/references/injection2pnicc-cube-reference.vtu
+++ b/test/references/injection2pnicc-cube-reference.vtu
@@ -2,8 +2,8 @@
 <VTKFile type="UnstructuredGrid" version="0.1" byte_order="LittleEndian">
   <UnstructuredGrid>
     <Piece NumberOfCells="384" NumberOfPoints="425">
-      <CellData Scalars="S_w">
-        <DataArray type="Float32" Name="S_w" NumberOfComponents="1" format="ascii">
+      <CellData Scalars="S_Water">
+        <DataArray type="Float32" Name="S_Water" NumberOfComponents="1" format="ascii">
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           1 1 1 1 1 1 1 1 1 1 1 1
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@@ -37,7 +37,7 @@
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-        <DataArray type="Float32" Name="S_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="S_Nitrogen" NumberOfComponents="1" format="ascii">
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@@ -71,7 +71,7 @@
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+        <DataArray type="Float32" Name="p_Water" NumberOfComponents="1" format="ascii">
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@@ -105,7 +105,7 @@
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-        <DataArray type="Float32" Name="p_n" NumberOfComponents="1" format="ascii">
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@@ -173,7 +173,7 @@
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@@ -207,7 +207,7 @@
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-        <DataArray type="Float32" Name="rho_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="rho_Nitrogen" NumberOfComponents="1" format="ascii">
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@@ -241,7 +241,7 @@
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-        <DataArray type="Float32" Name="mob_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="mob_Water" NumberOfComponents="1" format="ascii">
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diff --git a/test/references/injection2pnicc-simplex-reference.vtu b/test/references/injection2pnicc-simplex-reference.vtu
index adc0c23c57f8c520b9a3eb9ba6de2dca6123898d..af57eb46177710e867d7c4ae594a59732dff70f6 100644
--- a/test/references/injection2pnicc-simplex-reference.vtu
+++ b/test/references/injection2pnicc-simplex-reference.vtu
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diff --git a/test/references/kuevette3p3cnibox-reference.vtu b/test/references/kuevette3p3cnibox-reference.vtu
index 402ad0171c87e812cd94378eb38cfc2b96ca9dbd..6deb874bf331929190f3263b3154a07cb8493060 100644
--- a/test/references/kuevette3p3cnibox-reference.vtu
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diff --git a/test/references/kuevette3p3cnicc-reference.vtu b/test/references/kuevette3p3cnicc-reference.vtu
index e0d3f2b8799d13a2617fd339b89632077bcee2a8..85700b3e61c143eac6047b168e65ef96be76795a 100644
--- a/test/references/kuevette3p3cnicc-reference.vtu
+++ b/test/references/kuevette3p3cnicc-reference.vtu
@@ -2,8 +2,8 @@
 <VTKFile type="UnstructuredGrid" version="0.1" byte_order="LittleEndian">
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-      <CellData Scalars="S_w">
-        <DataArray type="Float32" Name="S_w" NumberOfComponents="1" format="ascii">
+      <CellData Scalars="S_Water">
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+        <DataArray type="Float32" Name="x^H2O_Water" NumberOfComponents="1" format="ascii">
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@@ -123,7 +123,7 @@
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+        <DataArray type="Float32" Name="x^Air_NAPL" NumberOfComponents="1" format="ascii">
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diff --git a/test/references/lensbox-reference.vtu b/test/references/lensbox-reference.vtu
index 6dcb24b845d02ee3373e721b93214d9fd6264b73..98339739ca3423cc547b2803edcd0ba3225d368e 100644
--- a/test/references/lensbox-reference.vtu
+++ b/test/references/lensbox-reference.vtu
@@ -2,8 +2,8 @@
 <VTKFile type="UnstructuredGrid" version="0.1" byte_order="LittleEndian">
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-      <PointData Scalars="S_n">
-        <DataArray type="Float32" Name="S_n" NumberOfComponents="1" format="ascii">
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diff --git a/test/references/lensbox_ifsolver-reference.vtu b/test/references/lensbox_ifsolver-reference.vtu
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diff --git a/test/references/lensboxadaptive-reference.vtu b/test/references/lensboxadaptive-reference.vtu
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diff --git a/test/references/lenscc-reference.vtu b/test/references/lenscc-reference.vtu
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index bd13334661d7a58f51809333241581b64639533e..db3afb1a655764d620f5386b080ec06b5c9cb701 100644
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index 9cf2f03499b35742eac14c50b04505dc8d7b167b..2079b553d9643ef8f399b8b3edf6bb85a9c4739a 100644
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diff --git a/test/references/lensccmpfaadaptive-reference.vtu b/test/references/lensccmpfaadaptive-reference.vtu
index 50828b1f368a218fa74dc8c6bddacb5eb381f1e6..b0268b7ad29df2da6d17a28a07a31113d97bf70c 100644
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diff --git a/test/references/md-boundary-1p2p-injection-2p-reference.vtu b/test/references/md-boundary-1p2p-injection-2p-reference.vtu
index 9ba7e63706cc3cf9d59a774bbfa7f3da6b1be4fd..11d4d8c9689f9d54d126311d22104f5e08b6f887 100644
--- a/test/references/md-boundary-1p2p-injection-2p-reference.vtu
+++ b/test/references/md-boundary-1p2p-injection-2p-reference.vtu
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diff --git a/test/references/mpnc_2p2c_box-reference.vtu b/test/references/mpnc_2p2c_box-reference.vtu
index ed5058ffe7500c8023e25e37cb5c01f913aca026..80abe88bf98b7af3284bd7b35defb5707b64f143 100644
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diff --git a/test/references/mpnc_2p2c_tpfa-reference.vtu b/test/references/mpnc_2p2c_tpfa-reference.vtu
index 63aa164b178c521bf5a14cad9453b75551d94db6..c3f799b13446e3ac5d7ae84720bae44496c3e2b0 100644
--- a/test/references/mpnc_2p2c_tpfa-reference.vtu
+++ b/test/references/mpnc_2p2c_tpfa-reference.vtu
@@ -2,8 +2,8 @@
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-      <CellData Scalars="S_n">
-        <DataArray type="Float32" Name="S_n" NumberOfComponents="1" format="ascii">
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@@ -309,7 +309,7 @@
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-        <DataArray type="Float32" Name="X^N2_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="X^N2_Water" NumberOfComponents="1" format="ascii">
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@@ -343,7 +343,7 @@
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-        <DataArray type="Float32" Name="X^H2O_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="X^H2O_Nitrogen" NumberOfComponents="1" format="ascii">
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@@ -377,7 +377,7 @@
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         </DataArray>
-        <DataArray type="Float32" Name="X^N2_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="X^N2_Nitrogen" NumberOfComponents="1" format="ascii">
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           0.979652 0.980023 0.98024 0.980358 0.980421 0.980453 0.980474 0.980493 0.980524 0.980592 0.980743 0.981077
@@ -411,7 +411,7 @@
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         </DataArray>
-        <DataArray type="Float32" Name="x^H2O_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="x^H2O_Water" NumberOfComponents="1" format="ascii">
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           0.999989 0.999988 0.999988 0.999988 0.999988 0.999988 0.999988 0.999988 0.999988 0.999988 0.999988 0.999988
@@ -445,7 +445,7 @@
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         </DataArray>
-        <DataArray type="Float32" Name="x^N2_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="x^N2_Water" NumberOfComponents="1" format="ascii">
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           1.33206e-05 1.43395e-05 1.64422e-05 2.0413e-05 2.673e-05 3.49901e-05 4.42385e-05 5.36073e-05 6.25344e-05 7.0672e-05 7.77191e-05 8.31824e-05
           1.13723e-05 1.15881e-05 1.17178e-05 1.17898e-05 1.1828e-05 1.18484e-05 1.18608e-05 1.18726e-05 1.18922e-05 1.19343e-05 1.203e-05 1.22465e-05
@@ -479,7 +479,7 @@
           1.03535e-05 1.03535e-05 1.03535e-05 1.03535e-05 1.03535e-05 1.03534e-05 1.03534e-05 1.03534e-05 1.03534e-05 1.03535e-05 1.03538e-05 1.03545e-05
           1.12127e-05 1.12182e-05 1.12182e-05 1.12182e-05 1.12182e-05 1.12182e-05 1.12182e-05 1.12133e-05 1.05575e-05 1.05637e-05 1.05731e-05 1.05799e-05
         </DataArray>
-        <DataArray type="Float32" Name="x^H2O_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="x^H2O_Nitrogen" NumberOfComponents="1" format="ascii">
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@@ -513,7 +513,7 @@
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-        <DataArray type="Float32" Name="x^N2_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="x^N2_Nitrogen" NumberOfComponents="1" format="ascii">
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           0.968712 0.969277 0.969607 0.969787 0.969881 0.969932 0.969962 0.969991 0.970039 0.970142 0.970372 0.970881
diff --git a/test/references/obstaclebox-reference.vtu b/test/references/obstaclebox-reference.vtu
index d348c78d9a02e006b8e444be8c93f63bddcd1bf5..a83c4bad231065ecb67de6733a468588a55bc577 100644
--- a/test/references/obstaclebox-reference.vtu
+++ b/test/references/obstaclebox-reference.vtu
@@ -2,8 +2,8 @@
 <VTKFile type="UnstructuredGrid" version="0.1" byte_order="LittleEndian">
   <UnstructuredGrid>
     <Piece NumberOfCells="384" NumberOfPoints="425">
-      <PointData Scalars="S_w">
-        <DataArray type="Float32" Name="S_w" NumberOfComponents="1" format="ascii">
+      <PointData Scalars="S_Water">
+        <DataArray type="Float32" Name="S_Water" NumberOfComponents="1" format="ascii">
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           0 0 0 0 0 0 0 0 0 0 0 0
           0 0 0 0 0 0 0 0 0 0 0 0
@@ -41,7 +41,7 @@
           0 0 0 0 0 0 0 0 0 0 0 0
           0 0 0 0 0
         </DataArray>
-        <DataArray type="Float32" Name="S_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="S_Nitrogen" NumberOfComponents="1" format="ascii">
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           1 1 1 1 1 1 1 1 1 1 1 1
           1 1 1 1 1 1 1 1 1 1 1 1
@@ -79,7 +79,7 @@
           1 1 1 1 1 1 1 1 1 1 1 1
           1 1 1 1 1
         </DataArray>
-        <DataArray type="Float32" Name="p_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="p_Water" NumberOfComponents="1" format="ascii">
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@@ -117,7 +117,7 @@
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         </DataArray>
-        <DataArray type="Float32" Name="p_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="p_Nitrogen" NumberOfComponents="1" format="ascii">
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@@ -155,7 +155,7 @@
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         </DataArray>
-        <DataArray type="Float32" Name="rho_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="rho_Water" NumberOfComponents="1" format="ascii">
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           997.048 997.048 997.048 997.048 997.048 997.048 997.048 997.048 997.048 997.048 997.049 997.049
@@ -193,7 +193,7 @@
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           997.048 997.048 997.048 997.048 997.048
         </DataArray>
-        <DataArray type="Float32" Name="rho_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="rho_Nitrogen" NumberOfComponents="1" format="ascii">
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@@ -231,7 +231,7 @@
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           1.12974 1.13013 1.13042 1.13061 1.13067
         </DataArray>
-        <DataArray type="Float32" Name="lambda_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="mob_Water" NumberOfComponents="1" format="ascii">
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@@ -269,7 +269,7 @@
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+        <DataArray type="Float32" Name="mob_Nitrogen" NumberOfComponents="1" format="ascii">
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           56746.7 56746.7 56746.7 56746.7 56746.7 56746.7 56746.7 56746.7 56746.7 56746.7 56746.7 56746.7
@@ -345,7 +345,7 @@
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-        <DataArray type="Float32" Name="x^H2O_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="x^H2O_Water" NumberOfComponents="1" format="ascii">
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@@ -383,7 +383,7 @@
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         </DataArray>
-        <DataArray type="Float32" Name="x^N2_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="x^N2_Water" NumberOfComponents="1" format="ascii">
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           1.15601e-05 1.15565e-05 1.15763e-05 1.15725e-05 1.1598e-05 1.1594e-05 1.16263e-05 1.1622e-05 1.16624e-05 1.16577e-05 1.17081e-05 1.17027e-05
@@ -421,7 +421,7 @@
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           1.15101e-05 1.1514e-05 1.1517e-05 1.15189e-05 1.15196e-05
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-        <DataArray type="Float32" Name="x^H2O_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="x^H2O_Nitrogen" NumberOfComponents="1" format="ascii">
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@@ -459,7 +459,7 @@
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           0.01 0.01 0.01 0.01 0.01
         </DataArray>
-        <DataArray type="Float32" Name="x^N2_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="x^N2_Nitrogen" NumberOfComponents="1" format="ascii">
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           0.99 0.99 0.99 0.99 0.99 0.99 0.99 0.99 0.99 0.99 0.99 0.99
diff --git a/test/references/obstaclecc-reference.vtu b/test/references/obstaclecc-reference.vtu
index 6003008ca475dc408d363df5651509c1a6f3dc2c..357a08ea9143dc87a2b27edc8c09e92e9eb5d8f3 100644
--- a/test/references/obstaclecc-reference.vtu
+++ b/test/references/obstaclecc-reference.vtu
@@ -2,8 +2,8 @@
 <VTKFile type="UnstructuredGrid" version="0.1" byte_order="LittleEndian">
   <UnstructuredGrid>
     <Piece NumberOfCells="384" NumberOfPoints="425">
-      <CellData Scalars="S_w">
-        <DataArray type="Float32" Name="S_w" NumberOfComponents="1" format="ascii">
+      <CellData Scalars="S_Water">
+        <DataArray type="Float32" Name="S_Water" NumberOfComponents="1" format="ascii">
           0 0 0 0 0 0 0 0 0 0 0 0
           0 0 0 0 0 0 0 0 0 0.000122183 0.0664269 0.945884
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@@ -37,7 +37,7 @@
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         </DataArray>
-        <DataArray type="Float32" Name="S_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="S_Nitrogen" NumberOfComponents="1" format="ascii">
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           1 1 1 1 1 1 1 1 1 0.999878 0.933573 0.054116
           1 1 1 1 1 1 1 1 1 1 1 1
@@ -71,7 +71,7 @@
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           1 1 1 1 1 1 1 1 1 1 1 1
         </DataArray>
-        <DataArray type="Float32" Name="p_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="p_Water" NumberOfComponents="1" format="ascii">
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           100011 100029 100040 100045 100002 100000 100000 100018 100649 100693 100781 100918
@@ -105,7 +105,7 @@
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         </DataArray>
-        <DataArray type="Float32" Name="p_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="p_Nitrogen" NumberOfComponents="1" format="ascii">
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@@ -139,7 +139,7 @@
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         </DataArray>
-        <DataArray type="Float32" Name="rho_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="rho_Water" NumberOfComponents="1" format="ascii">
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           997.048 997.048 997.048 997.048 997.048 997.048 997.048 997.048 997.048 997.048 997.048 997.048
@@ -173,7 +173,7 @@
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         </DataArray>
-        <DataArray type="Float32" Name="rho_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="rho_Nitrogen" NumberOfComponents="1" format="ascii">
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@@ -207,7 +207,7 @@
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         </DataArray>
-        <DataArray type="Float32" Name="lambda_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="mob_Water" NumberOfComponents="1" format="ascii">
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@@ -241,7 +241,7 @@
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-        <DataArray type="Float32" Name="lambda_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="mob_Nitrogen" NumberOfComponents="1" format="ascii">
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@@ -309,7 +309,7 @@
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-        <DataArray type="Float32" Name="x^H2O_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="x^H2O_Water" NumberOfComponents="1" format="ascii">
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@@ -343,7 +343,7 @@
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-        <DataArray type="Float32" Name="x^N2_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="x^N2_Water" NumberOfComponents="1" format="ascii">
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@@ -377,7 +377,7 @@
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-        <DataArray type="Float32" Name="x^H2O_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="x^H2O_Nitrogen" NumberOfComponents="1" format="ascii">
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@@ -411,7 +411,7 @@
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-        <DataArray type="Float32" Name="x^N2_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="x^N2_Nitrogen" NumberOfComponents="1" format="ascii">
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diff --git a/test/references/outflowbox-reference.vtu b/test/references/outflowbox-reference.vtu
index 0fba0e9e0ab2e437223eda8c5108ec7c6d13539b..06a9a51733218cafe2738514c39a561799af23c5 100644
--- a/test/references/outflowbox-reference.vtu
+++ b/test/references/outflowbox-reference.vtu
@@ -2,7 +2,7 @@
 <VTKFile type="UnstructuredGrid" version="0.1" byte_order="LittleEndian">
   <UnstructuredGrid>
     <Piece NumberOfCells="40" NumberOfPoints="63">
-      <PointData Scalars="p" Vectors="velocity_w (m/s)">
+      <PointData Scalars="p" Vectors="velocity_Water (m/s)">
         <DataArray type="Float32" Name="p" NumberOfComponents="1" format="ascii">
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@@ -19,7 +19,7 @@
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-        <DataArray type="Float32" Name="velocity_w (m/s)" NumberOfComponents="3" format="ascii">
+        <DataArray type="Float32" Name="velocity_Water (m/s)" NumberOfComponents="3" format="ascii">
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@@ -37,7 +37,7 @@
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-        <DataArray type="Float32" Name="x^H2O_w" NumberOfComponents="1" format="ascii">
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@@ -45,7 +45,7 @@
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-        <DataArray type="Float32" Name="x^N2_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="x^N2_Water" NumberOfComponents="1" format="ascii">
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@@ -53,7 +53,7 @@
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           1.92505e-05 1.90878e-05 1.90016e-05
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-        <DataArray type="Float32" Name="X^H2O_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="X^H2O_Water" NumberOfComponents="1" format="ascii">
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@@ -61,7 +61,7 @@
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           0.99997 0.99997 0.99997
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-        <DataArray type="Float32" Name="X^N2_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="X^N2_Water" NumberOfComponents="1" format="ascii">
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           3.0862e-05 3.0862e-05 3.077e-05 3.077e-05 3.06556e-05 3.06556e-05 3.05165e-05 3.05165e-05 3.03508e-05 3.03508e-05 3.01571e-05 3.01571e-05
diff --git a/test/references/richardsanalyticalcc-reference.vtu b/test/references/richardsanalyticalcc-reference.vtu
index 1f3c3e4a208d75c551a1374c080c4478564c0a7e..8f450ee9849f587e5a5a165e24a96bbd0a8d4747 100644
--- a/test/references/richardsanalyticalcc-reference.vtu
+++ b/test/references/richardsanalyticalcc-reference.vtu
@@ -2,8 +2,8 @@
 <VTKFile type="UnstructuredGrid" version="0.1" byte_order="LittleEndian">
   <UnstructuredGrid>
     <Piece NumberOfCells="512" NumberOfPoints="1026">
-      <CellData Scalars="S_n">
-        <DataArray type="Float32" Name="S_n" NumberOfComponents="1" format="ascii">
+      <CellData Scalars="S_Air">
+        <DataArray type="Float32" Name="S_Air" NumberOfComponents="1" format="ascii">
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@@ -48,7 +48,7 @@
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+        <DataArray type="Float32" Name="S_Water" NumberOfComponents="1" format="ascii">
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           1 1 1 1 1 1 1 1 1 1 1 1
@@ -93,7 +93,7 @@
           1 1 1 1 1 1 1 1 1 1 1 1
           1 1 1 1 1 1 1 1
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+        <DataArray type="Float32" Name="p_Air" NumberOfComponents="1" format="ascii">
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@@ -138,7 +138,7 @@
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           100000 100000 100000 100000 100000 100000 100000 100000
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-        <DataArray type="Float32" Name="p_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="p_Water" NumberOfComponents="1" format="ascii">
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           95642.1 95642.2 95642.3 95642.4 95642.5 95642.6 95642.7 95642.9 95643 95643.1 95643.3 95643.5
@@ -228,7 +228,7 @@
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-        <DataArray type="Float32" Name="density" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="rho_Water" NumberOfComponents="1" format="ascii">
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           1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000
           1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000
@@ -273,7 +273,7 @@
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           1000 1000 1000 1000 1000 1000 1000 1000
         </DataArray>
-        <DataArray type="Float32" Name="mobility" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="mob_Water" NumberOfComponents="1" format="ascii">
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           1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000
           1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000
diff --git a/test/references/richardslensbox-reference-parallel.vtu b/test/references/richardslensbox-reference-parallel.vtu
index 61705ee731e35c4487af11be760ca9144eebe6ab..a0b9e3f680c9e9c369f0436fd8bccd7c38ae379a 100644
--- a/test/references/richardslensbox-reference-parallel.vtu
+++ b/test/references/richardslensbox-reference-parallel.vtu
@@ -2,7 +2,7 @@
 <VTKFile type="UnstructuredGrid" version="0.1" byte_order="LittleEndian">
   <UnstructuredGrid>
     <Piece NumberOfCells="192" NumberOfPoints="221">
-      <PointData Scalars="S_w">
+      <PointData Scalars="S_Water">
         <DataArray type="Float32" Name="S_w" NumberOfComponents="1" format="ascii">
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           9.02056e-17 9.02056e-17 9.02056e-17 9.02056e-17 9.02056e-17 9.02056e-17 9.02056e-17 9.02056e-17 9.02056e-17 9.02056e-17 9.02056e-17 9.02056e-17
@@ -23,8 +23,29 @@
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           0.713034 0.932869 0.936509 0.932869 0.713034
+      <PointData Scalars="S_Water">
+        <DataArray type="Float32" Name="S_Water" NumberOfComponents="1" format="ascii">
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+          9.35838e-17 9.35838e-17 9.35838e-17 9.35838e-17 9.35838e-17 9.35838e-17 9.35838e-17 9.35838e-17 9.35838e-17 9.35838e-17 9.35838e-17 9.35838e-17
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+          -4.36236e-17 -4.36236e-17 -4.36236e-17 -4.36236e-17 -4.36236e-17 -4.36236e-17 -4.36236e-17 -4.36236e-17 -4.36236e-17 9.35838e-17 9.35838e-17 9.35838e-17
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@@ -45,7 +66,7 @@
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@@ -66,7 +87,7 @@
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@@ -108,7 +129,7 @@
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diff --git a/test/references/richardslensbox-reference.vtu b/test/references/richardslensbox-reference.vtu
index c2a5a6d5ce7680da904411b65e7915cef0b8b549..4c7c0131b3cf773ba8518407ff3d017f93de34b4 100644
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diff --git a/test/references/richardslenscc-reference-parallel.vtu b/test/references/richardslenscc-reference-parallel.vtu
index 5711d651d5d4a3ff77408112baa32bef81574c8d..a929fadbcb69384dce5d41f06c783f2059896bbc 100644
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diff --git a/test/references/richardslenscc-reference.vtu b/test/references/richardslenscc-reference.vtu
index 4c88cf188052d9e7f431dc89f0978a3d10aaa771..2040c219897472fec20380d302103f7ff339fad3 100644
--- a/test/references/richardslenscc-reference.vtu
+++ b/test/references/richardslenscc-reference.vtu
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diff --git a/test/references/richardsniconductionbox-reference.vtu b/test/references/richardsniconductionbox-reference.vtu
index ec965308abdd9a5d6955fac1e7f174aea9225c0a..9409b7f76786687015308ba5bc5929735d8a6349 100644
--- a/test/references/richardsniconductionbox-reference.vtu
+++ b/test/references/richardsniconductionbox-reference.vtu
@@ -2,8 +2,8 @@
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diff --git a/test/references/richardsniconductioncc-reference.vtu b/test/references/richardsniconductioncc-reference.vtu
index eeaf7ce32e5f6e760f12fb89a9c735bdb7fb080a..f20f3c1d8df94f8a73a45e8bc9e00820c3980709 100644
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diff --git a/test/references/richardsniconvectionbox-reference.vtu b/test/references/richardsniconvectionbox-reference.vtu
index 2c7c622d542e032f6fc0869e5fb54ff56fe36b91..ff51b879bf1c2bdee8dc8763c8064ae68aee1096 100644
--- a/test/references/richardsniconvectionbox-reference.vtu
+++ b/test/references/richardsniconvectionbox-reference.vtu
@@ -2,8 +2,8 @@
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-        <DataArray type="Float32" Name="S_n" NumberOfComponents="1" format="ascii">
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diff --git a/test/references/richardsniconvectioncc-reference.vtu b/test/references/richardsniconvectioncc-reference.vtu
index ee07ca796c08b72e943ce93015faac3e4ba3c761..eea54deed5a4abae333cd2f68f7e20956ce5d621 100644
--- a/test/references/richardsniconvectioncc-reference.vtu
+++ b/test/references/richardsniconvectioncc-reference.vtu
@@ -2,8 +2,8 @@
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-        <DataArray type="Float32" Name="S_n" NumberOfComponents="1" format="ascii">
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diff --git a/test/references/richardswelltracerbox-reference.vtu b/test/references/richardswelltracerbox-reference.vtu
index 24fd2a4aa6361427534020e12d16ede4af628c54..8da5f63d001e2af2a111be1b4ac962f53a96dbdd 100644
--- a/test/references/richardswelltracerbox-reference.vtu
+++ b/test/references/richardswelltracerbox-reference.vtu
@@ -2,8 +2,8 @@
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-        <DataArray type="Float32" Name="S_w" NumberOfComponents="1" format="ascii">
+      <PointData Scalars="S_SimpleH2O" Vectors="velocity_SimpleH2O (m/s)">
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diff --git a/test/references/richardswelltracercc-reference.vtu b/test/references/richardswelltracercc-reference.vtu
index 7dc552a768594ef035f7cfd74747f17bb643c631..865dbf474fde774eb99f53060a392511e526a1f7 100644
--- a/test/references/richardswelltracercc-reference.vtu
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@@ -1121,7 +1121,7 @@
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diff --git a/test/references/saltwaterintrusion-reference.vtu b/test/references/saltwaterintrusion-reference.vtu
index 3deaa92ec18afd48a117ccae5b510283831bad07..f89bbcda32bd1a40b2c2e6ee8815891f2465850b 100644
--- a/test/references/saltwaterintrusion-reference.vtu
+++ b/test/references/saltwaterintrusion-reference.vtu
@@ -2,8 +2,8 @@
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-        <DataArray type="Float32" Name="pressure" NumberOfComponents="1" format="ascii">
+      <PointData Scalars="pressure" Vectors="velocity_Brine (m/s)">
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           0 3.99145e-16 0 4.06886e-16 4.69427e-10 3.16568e-10 0.000529391 9.03866e-05 0.00230431 0.000508614 0.00542828 0.00141348
           0.00983488 0.00295539 0.0151423 0.00527386 0.0208527 0.00843838 0.0264905 0.0124262 0.0316784 0.0170914 0.0361777 0.022143
           0.0398863 0.027189 0.0428155 0.0318425 0.0450659 0.035866 0.0468097 0.0392679 0.0483325 0.0422387 0.0503429 0.0456059
@@ -107,7 +107,7 @@
           2.17377e-07 7.09331e-07 1.75684e-06 4.24513e-06 9.82734e-06 2.13416e-05 4.35676e-05 8.4579e-05 0.000157063 0.000279793 0.00048348 0.000832206
           0.0014613 0.00268871 0.00442348 0.00446347 0.0853952 0.0911839
         </DataArray>
-        <DataArray type="Float32" Name="velocity_H2O (m/s)" NumberOfComponents="3" format="ascii">
+        <DataArray type="Float32" Name="velocity_Brine (m/s)" NumberOfComponents="3" format="ascii">
           1.90517e-06 1.31733e-06 0 1.3318e-06 5.73367e-07 0 1.09948e-06 1.40499e-06 0 8.61489e-07 8.11376e-07 0
           4.38221e-07 3.20212e-07 0 4.35845e-07 5.07866e-07 0 -1.93381e-07 3.1139e-07 0 1.14063e-07 4.45532e-07 0
           -8.27179e-07 3.22407e-07 0 -1.42296e-07 4.44639e-07 0 -1.4806e-06 3.31012e-07 0 -3.95628e-07 4.62127e-07 0
diff --git a/test/references/steaminjectionbox-reference.vtu b/test/references/steaminjectionbox-reference.vtu
index 14e80b986649681f079fc1bca41ecdcaf02d61c3..8ef6bc12fab516b12ab62e0d38b3238b1889fd07 100644
--- a/test/references/steaminjectionbox-reference.vtu
+++ b/test/references/steaminjectionbox-reference.vtu
@@ -2,8 +2,8 @@
 <VTKFile type="UnstructuredGrid" version="0.1" byte_order="LittleEndian">
   <UnstructuredGrid>
     <Piece NumberOfCells="200" NumberOfPoints="231">
-      <PointData Scalars="S_w">
-        <DataArray type="Float32" Name="S_w" NumberOfComponents="1" format="ascii">
+      <PointData Scalars="S_liquid">
+        <DataArray type="Float32" Name="S_liquid" NumberOfComponents="1" format="ascii">
           1 1 1 1 1 1 1 1 1 1 1 1
           1 1 1 1 1 1 1 1 1 1 1 1
           1 1 1 1 1 1 1 1 1 1 1 1
@@ -25,7 +25,7 @@
           1 1 1 1 1 1 1 1 1 1 1 1
           1 1 1
         </DataArray>
-        <DataArray type="Float32" Name="S_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="S_vapor" NumberOfComponents="1" format="ascii">
           0 0 0 0 0 0 0 0 0 0 0 0
           0 0 0 0 0 0 0 0 0 0 0 0
           0 0 0 0 0 0 0 0 0 0 0 0
@@ -47,7 +47,7 @@
           0 0 0 0 0 0 0 0 0 0 0 0
           0 0 0
         </DataArray>
-        <DataArray type="Float32" Name="p_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="p_liquid" NumberOfComponents="1" format="ascii">
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           179861 175939 179841 175919 179821 175898 179800 175877 179780 175856 172098 172096
           172087 172074 172057 172038 172017 171996 171975 171953 171932 168189 168186 168176
@@ -69,7 +69,7 @@
           105229 105227 105226 105224 101300 101300 101300 101300 101300 101300 101300 101300
           101300 101300 101300
         </DataArray>
-        <DataArray type="Float32" Name="p_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="p_vapor" NumberOfComponents="1" format="ascii">
           179934 179932 176014 176011 179924 176003 179913 175992 179898 175976 179880 175958
           179861 175939 179841 175919 179821 175898 179800 175877 179780 175856 172098 172096
           172087 172074 172057 172038 172017 171996 171975 171953 171932 168189 168186 168176
@@ -113,7 +113,7 @@
           0 0 0 0 0 0 0 0 0 0 0 0
           0 0 0
         </DataArray>
-        <DataArray type="Float32" Name="rho_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="rho_liquid" NumberOfComponents="1" format="ascii">
           999.729 999.729 999.727 999.727 999.729 999.727 999.729 999.727 999.729 999.727 999.729 999.727
           999.729 999.727 999.729 999.727 999.729 999.727 999.729 999.727 999.729 999.727 999.725 999.725
           999.725 999.725 999.725 999.725 999.725 999.725 999.725 999.725 999.725 999.722 999.723 999.723
@@ -135,7 +135,7 @@
           999.693 999.693 999.693 999.693 999.691 999.691 999.691 999.691 999.691 999.691 999.691 999.691
           999.691 999.691 999.691
         </DataArray>
-        <DataArray type="Float32" Name="rho_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="rho_vapor" NumberOfComponents="1" format="ascii">
           1.37955 1.37953 1.3495 1.34948 1.37948 1.34942 1.37939 1.34933 1.37928 1.34921 1.37914 1.34907
           1.379 1.34892 1.37884 1.34877 1.37868 1.34861 1.37853 1.34845 1.37837 1.34829 1.31948 1.31946
           1.31939 1.31929 1.31916 1.31901 1.31886 1.31869 1.31853 1.31837 1.3182 1.28945 1.28948 1.2894
@@ -157,7 +157,7 @@
           0.806787 0.806775 0.806762 0.806748 0.776663 0.776663 0.776663 0.776663 0.776663 0.776663 0.776663 0.776663
           0.776663 0.776663 0.776663
         </DataArray>
-        <DataArray type="Float32" Name="mob_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="mob_liquid" NumberOfComponents="1" format="ascii">
           764.381 764.381 764.378 764.378 764.381 764.378 764.381 764.378 764.381 764.378 764.381 764.378
           764.381 764.378 764.381 764.378 764.381 764.378 764.381 764.378 764.381 764.378 764.378 764.376
           764.376 764.376 764.376 764.376 764.376 764.376 764.376 764.376 764.376 764.642 764.382 764.374
@@ -179,7 +179,7 @@
           764.341 764.341 764.341 764.341 764.339 764.339 764.339 764.339 764.339 764.339 764.339 764.339
           764.339 764.339 764.339
         </DataArray>
-        <DataArray type="Float32" Name="mob_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="mob_vapor" NumberOfComponents="1" format="ascii">
           0 0 0 0 0 0 0 0 0 0 0 0
           0 0 0 0 0 0 0 0 0 0 0 0
           0 0 0 0 0 0 0 0 0 0 0 0
diff --git a/test/references/steaminjectioncc-reference.vtu b/test/references/steaminjectioncc-reference.vtu
index df76678bd218c9eee49f57c5f00048363c796623..cd493da1782353a5a926a13559cf85da90ef1efa 100644
--- a/test/references/steaminjectioncc-reference.vtu
+++ b/test/references/steaminjectioncc-reference.vtu
@@ -2,8 +2,8 @@
 <VTKFile type="UnstructuredGrid" version="0.1" byte_order="LittleEndian">
   <UnstructuredGrid>
     <Piece NumberOfCells="800" NumberOfPoints="861">
-      <CellData Scalars="S_w">
-        <DataArray type="Float32" Name="S_w" NumberOfComponents="1" format="ascii">
+      <CellData Scalars="S_liquid">
+        <DataArray type="Float32" Name="S_liquid" NumberOfComponents="1" format="ascii">
           1 1 1 1 1 1 1 1 1 1 1 1
           1 1 1 1 1 1 1 1 1 1 1 1
           1 1 1 1 1 1 1 1 1 1 1 1
@@ -72,7 +72,7 @@
           1 1 1 1 1 1 1 1 1 1 1 1
           1 1 1 1 1 1 1 1
         </DataArray>
-        <DataArray type="Float32" Name="S_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="S_vapor" NumberOfComponents="1" format="ascii">
           0 0 0 0 0 0 0 0 0 0 0 0
           0 0 0 0 0 0 0 0 0 0 0 0
           0 0 0 0 0 0 0 0 0 0 0 0
@@ -141,7 +141,7 @@
           0 0 0 0 0 0 0 0 0 0 0 0
           0 0 0 0 0 0 0 0
         </DataArray>
-        <DataArray type="Float32" Name="p_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="p_liquid" NumberOfComponents="1" format="ascii">
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           178857 178849 178842 178834 178826 178818 178810 178803 176954 176953 176951 176949
           176945 176941 176936 176930 176924 176918 176911 176903 176896 176888 176880 176872
@@ -210,7 +210,7 @@
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           102282 102282 102282 102282 102282 102281 102281 102281
         </DataArray>
-        <DataArray type="Float32" Name="p_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="p_vapor" NumberOfComponents="1" format="ascii">
           178915 178914 178912 178909 178906 178902 178897 178891 178885 178879 178872 178865
           178857 178849 178842 178834 178826 178818 178810 178803 176954 176953 176951 176949
           176945 176941 176936 176930 176924 176918 176911 176903 176896 176888 176880 176872
@@ -348,7 +348,7 @@
           0 0 0 0 0 0 0 0 0 0 0 0
           0 0 0 0 0 0 0 0
         </DataArray>
-        <DataArray type="Float32" Name="rho_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="rho_liquid" NumberOfComponents="1" format="ascii">
           999.728 999.728 999.728 999.728 999.728 999.728 999.728 999.728 999.728 999.728 999.728 999.728
           999.728 999.728 999.728 999.728 999.728 999.728 999.728 999.728 999.727 999.727 999.727 999.727
           999.727 999.727 999.727 999.727 999.727 999.727 999.727 999.727 999.727 999.727 999.727 999.727
@@ -417,7 +417,7 @@
           999.692 999.692 999.692 999.692 999.692 999.692 999.692 999.692 999.692 999.692 999.692 999.692
           999.692 999.692 999.692 999.692 999.692 999.692 999.692 999.692
         </DataArray>
-        <DataArray type="Float32" Name="rho_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="rho_vapor" NumberOfComponents="1" format="ascii">
           1.37174 1.37173 1.37172 1.3717 1.37167 1.37164 1.3716 1.37156 1.37151 1.37146 1.37141 1.37135
           1.3713 1.37124 1.37118 1.37112 1.37106 1.371 1.37094 1.37088 1.35671 1.3567 1.35668 1.35666
           1.35664 1.3566 1.35657 1.35652 1.35648 1.35643 1.35637 1.35632 1.35626 1.3562 1.35614 1.35608
@@ -486,7 +486,7 @@
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           0.784194 0.784193 0.784191 0.78419 0.784189 0.784187 0.784186 0.784185
         </DataArray>
-        <DataArray type="Float32" Name="mob_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="mob_liquid" NumberOfComponents="1" format="ascii">
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           764.38 764.38 764.38 764.38 764.38 764.38 764.38 764.38 764.379 764.379 764.379 764.379
           764.379 764.379 764.379 764.379 764.379 764.379 764.379 764.379 764.379 764.379 764.379 764.379
@@ -555,7 +555,7 @@
           764.34 764.34 764.34 764.34 764.34 764.34 764.34 764.34 764.339 764.339 764.339 764.339
           764.339 764.339 764.339 764.339 764.339 764.339 764.339 764.339
         </DataArray>
-        <DataArray type="Float32" Name="mob_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="mob_vapor" NumberOfComponents="1" format="ascii">
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           0 0 0 0 0 0 0 0 0 0 0 0
           0 0 0 0 0 0 0 0 0 0 0 0
diff --git a/test/references/test_boxrichardsevaporation-reference.vtu b/test/references/test_boxrichardsevaporation-reference.vtu
index f5611168cf5ea995526062cccd39c865ddbdc71a..d4e7ea05e48a69b8ed66fefee1542abad2a6361a 100644
--- a/test/references/test_boxrichardsevaporation-reference.vtu
+++ b/test/references/test_boxrichardsevaporation-reference.vtu
@@ -2,8 +2,8 @@
 <VTKFile type="UnstructuredGrid" version="0.1" byte_order="LittleEndian">
   <UnstructuredGrid>
     <Piece NumberOfCells="100" NumberOfPoints="126">
-      <PointData Scalars="S_w">
-        <DataArray type="Float32" Name="S_w" NumberOfComponents="1" format="ascii">
+      <PointData Scalars="S_Water">
+        <DataArray type="Float32" Name="S_Water" NumberOfComponents="1" format="ascii">
           0.0571721 0.0571721 0.0571721 0.0571721 0.0571721 0.0571721 0.0571721 0.0571721 0.0571721 0.0571721 0.0571721 0.0571721
           0.0571721 0.0571721 0.0571721 0.0571721 0.0571721 0.0571721 0.0571721 0.0571721 0.0571721 0.0571721 0.0571721 0.0571721
           0.0571721 0.0571721 0.0571721 0.0571721 0.0571721 0.0571721 0.0571721 0.0571721 0.0571721 0.0571721 0.0571721 0.0571721
@@ -16,7 +16,7 @@
           0.0571721 0.0571721 0.0571721 0.0571721 0.0571721 0.0571721 0.0571695 0.0571695 0.0571695 0.0571695 0.0571695 0.0571695
           0 0 0 0 0 0
         </DataArray>
-        <DataArray type="Float32" Name="S_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="S_Air" NumberOfComponents="1" format="ascii">
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           0.942828 0.942828 0.942828 0.942828 0.942828 0.942828 0.942828 0.942828 0.942828 0.942828 0.942828 0.942828
           0.942828 0.942828 0.942828 0.942828 0.942828 0.942828 0.942828 0.942828 0.942828 0.942828 0.942828 0.942828
@@ -29,7 +29,7 @@
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           1 1 1 1 1 1
         </DataArray>
-        <DataArray type="Float32" Name="p_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="p_Water" NumberOfComponents="1" format="ascii">
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           99000 99000 99000 99000 99000 99000 99000 99000 99000 99000 99000 99000
@@ -42,7 +42,7 @@
           99000 99000 99000 99000 99000 99000 98999.9 98999.9 98999.9 98999.9 98999.9 98999.9
           97470.4 97470.4 97470.4 97470.4 97470.4 97470.4
         </DataArray>
-        <DataArray type="Float32" Name="p_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="p_Air" NumberOfComponents="1" format="ascii">
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           100000 100000 100000 100000 100000 100000 100000 100000 100000 100000 100000 100000
           100000 100000 100000 100000 100000 100000 100000 100000 100000 100000 100000 100000
@@ -68,7 +68,7 @@
           1000 1000 1000 1000 1000 1000 1000.07 1000.07 1000.07 1000.07 1000.07 1000.07
           2529.62 2529.62 2529.62 2529.62 2529.62 2529.62
         </DataArray>
-        <DataArray type="Float32" Name="density" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="rho_Water" NumberOfComponents="1" format="ascii">
           998.621 998.621 998.621 998.621 998.621 998.621 998.621 998.621 998.621 998.621 998.621 998.621
           998.621 998.621 998.621 998.621 998.621 998.621 998.621 998.621 998.621 998.621 998.621 998.621
           998.621 998.621 998.621 998.621 998.621 998.621 998.621 998.621 998.621 998.621 998.621 998.621
@@ -81,7 +81,7 @@
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           999.788 999.788 999.788 999.788 999.788 999.788
         </DataArray>
-        <DataArray type="Float32" Name="mobility" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="mob_Water" NumberOfComponents="1" format="ascii">
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           0.000207047 0.000207047 0.000207047 0.000207047 0.000207047 0.000207047 0.000207047 0.000207047 0.000207047 0.000207047 0.000207047 0.000207047
           0.000207047 0.000207047 0.000207047 0.000207047 0.000207047 0.000207047 0.000207047 0.000207047 0.000207047 0.000207047 0.000207047 0.000207047
diff --git a/test/references/test_ccrichardsevaporation-reference.vtu b/test/references/test_ccrichardsevaporation-reference.vtu
index fb9935370366c76464c1f230ace02211559caf43..5a0633ae591e06da8efc04060e642a5e4034ea40 100644
--- a/test/references/test_ccrichardsevaporation-reference.vtu
+++ b/test/references/test_ccrichardsevaporation-reference.vtu
@@ -2,8 +2,8 @@
 <VTKFile type="UnstructuredGrid" version="0.1" byte_order="LittleEndian">
   <UnstructuredGrid>
     <Piece NumberOfCells="100" NumberOfPoints="126">
-      <CellData Scalars="S_w">
-        <DataArray type="Float32" Name="S_w" NumberOfComponents="1" format="ascii">
+      <CellData Scalars="S_Water">
+        <DataArray type="Float32" Name="S_Water" NumberOfComponents="1" format="ascii">
           0.0571721 0.0571721 0.0571721 0.0571721 0.0571721 0.0571721 0.0571721 0.0571721 0.0571721 0.0571721 0.0571721 0.0571721
           0.0571721 0.0571721 0.0571721 0.0571721 0.0571721 0.0571721 0.0571721 0.0571721 0.0571721 0.0571721 0.0571721 0.0571721
           0.0571721 0.0571721 0.0571721 0.0571721 0.0571721 0.0571721 0.0571721 0.0571721 0.0571721 0.0571721 0.0571721 0.0571721
@@ -14,7 +14,7 @@
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           0 0 0 0
         </DataArray>
-        <DataArray type="Float32" Name="S_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="S_Air" NumberOfComponents="1" format="ascii">
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           0.942828 0.942828 0.942828 0.942828 0.942828 0.942828 0.942828 0.942828 0.942828 0.942828 0.942828 0.942828
@@ -25,7 +25,7 @@
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           1 1 1 1
         </DataArray>
-        <DataArray type="Float32" Name="p_w" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="p_Water" NumberOfComponents="1" format="ascii">
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           99000 99000 99000 99000 99000 99000 99000 99000 99000 99000 99000 99000
@@ -36,7 +36,7 @@
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           97470.4 97470.4 97470.4 97470.4
         </DataArray>
-        <DataArray type="Float32" Name="p_n" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="p_Air" NumberOfComponents="1" format="ascii">
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           100000 100000 100000 100000 100000 100000 100000 100000 100000 100000 100000 100000
           100000 100000 100000 100000 100000 100000 100000 100000 100000 100000 100000 100000
@@ -58,7 +58,7 @@
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           2529.62 2529.62 2529.62 2529.62
         </DataArray>
-        <DataArray type="Float32" Name="density" NumberOfComponents="1" format="ascii">
+        <DataArray type="Float32" Name="rho_Water" NumberOfComponents="1" format="ascii">
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           998.621 998.621 998.621 998.621 998.621 998.621 998.621 998.621 998.621 998.621 998.621 998.621
           998.621 998.621 998.621 998.621 998.621 998.621 998.621 998.621 998.621 998.621 998.621 998.621
@@ -69,7 +69,7 @@
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           999.369 999.369 999.369 999.369
         </DataArray>
-        <DataArray type="Float32" Name="mobility" NumberOfComponents="1" format="ascii">
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diff --git a/test/references/test_embedded_1d3d_1p2c_richards2c_1d-reference.vtp b/test/references/test_embedded_1d3d_1p2c_richards2c_1d-reference.vtp
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diff --git a/test/references/test_embedded_1d3d_1p2c_richards2c_3d-reference.vtu b/test/references/test_embedded_1d3d_1p2c_richards2c_3d-reference.vtu
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diff --git a/test/references/test_embedded_1p_richards_box_3d.vtu b/test/references/test_embedded_1p_richards_box_3d.vtu
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--- a/test/references/test_embedded_1p_richards_box_3d.vtu
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diff --git a/test/references/test_embedded_1p_richards_tpfa_3d.vtu b/test/references/test_embedded_1p_richards_tpfa_3d.vtu
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diff --git a/test/references/test_stokes1p2cdarcy2p2cvertical_darcy-reference.vtu b/test/references/test_stokes1p2cdarcy2p2cvertical_darcy-reference.vtu
index d4bfc3c3c71b7d9db750802f987203a043d20a5d..710a556d2825bf087e8ebbcef8549e74e0f13337 100644
--- a/test/references/test_stokes1p2cdarcy2p2cvertical_darcy-reference.vtu
+++ b/test/references/test_stokes1p2cdarcy2p2cvertical_darcy-reference.vtu
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diff --git a/test/references/test_stokes1p2cnidarcy2p2cni_vertical_darcy-reference.vtu b/test/references/test_stokes1p2cnidarcy2p2cni_vertical_darcy-reference.vtu
index 03cf738c18cf30afeea5af39bf8649efc7d0c55f..394f836fd15dfdcde701a2de058cef9c8454229b 100644
--- a/test/references/test_stokes1p2cnidarcy2p2cni_vertical_darcy-reference.vtu
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diff --git a/test/references/test_stokes1pdarcy2pvertical_darcy-reference.vtu b/test/references/test_stokes1pdarcy2pvertical_darcy-reference.vtu
index be7cc1399c94a489366b0bc16a51e5ceed568aed..b95ddb397f0b46c422b9d3d994b4405c10e5cfb2 100644
--- a/test/references/test_stokes1pdarcy2pvertical_darcy-reference.vtu
+++ b/test/references/test_stokes1pdarcy2pvertical_darcy-reference.vtu
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