diff --git a/dumux/material/constraintsolvers/compositionfromfugacities2pncmin.hh b/dumux/material/constraintsolvers/compositionfromfugacities2pncmin.hh
index b78511d91dccffa8f771bd0ef20f0a50e67ea758..728ef37baa9a96f6a05cfbd011e37d54deb7b461 100644
--- a/dumux/material/constraintsolvers/compositionfromfugacities2pncmin.hh
+++ b/dumux/material/constraintsolvers/compositionfromfugacities2pncmin.hh
@@ -25,6 +25,7 @@
 #ifndef DUMUX_COMPOSITION_FROM_FUGACITIES_2PNCMIN_HH
 #define DUMUX_COMPOSITION_FROM_FUGACITIES_2PNCMIN_HH
 
+#include "compositionfromfugacities.hh"
 #include <dune/common/deprecated.hh>
 #include <dune/common/fvector.hh>
 #include <dune/common/fmatrix.hh>
@@ -39,114 +40,10 @@ namespace Dumux {
  *        fugacities in a phase.
  */
 template <class Scalar, class FluidSystem>
-class DUNE_DEPRECATED_MSG("CompositionFromFugacities2pncmin is deprecated. Use CompositionFromFugacities2pnc instead.")
+class DUNE_DEPRECATED_MSG("CompositionFromFugacities2pncmin is deprecated. Use CompositionFromFugacities instead.")
   CompositionFromFugacities2pncmin
-  : public CompositionFromFugacities2pnc<Scalar, FluidSystem>
+  : public CompositionFromFugacities<Scalar, FluidSystem>
 { };
-// template <class Scalar, class FluidSystem>
-// class CompositionFromFugacities2pncmin
-// {
-//     enum {
-//             numComponents = FluidSystem::numComponents,
-//             numMajorComponents = FluidSystem::numPhases
-//          };
-//
-//     typedef typename FluidSystem::ParameterCache ParameterCache;
-//
-//
-// public:
-//     typedef Dune::FieldVector<Scalar, numComponents> ComponentVector;
-//
-//     /*!
-//      * \brief Guess an initial value for the composition of the phase.
-//      * \param fluidState Thermodynamic state of the fluids
-//      * \param paramCache  Container for cache parameters
-//      * \param phaseIdx The phase index
-//      * \param phasePresence The presence index of the reference phase
-//      * \param fugVec fugacity vector of the component
-//      */
-//     template <class FluidState>
-//     static void guessInitial(FluidState &fluidState,
-//                              ParameterCache &paramCache,
-//                              int phaseIdx,
-//                              int phasePresence,
-//                              const ComponentVector &fugVec)
-//     {
-//         if (FluidSystem::isIdealMixture(phaseIdx))
-//             return;
-//
-//         // Pure component fugacities
-//         for (int i = 0; i < numComponents; ++ i)
-//         {
-//             fluidState.setMoleFraction(phaseIdx,i, 1.0/numComponents);
-//         }
-//     }
-//
-//     /*!
-//      * \brief Calculates the chemical equilibrium from the component
-//      *        fugacities in a phase. This constraint solver is developed for drying scenarios where
-//      *        salt component is restricted to liquid phase and still for the sake for equilibrium
-//      *        calculation some residual salt must be considered in the gas phase. In such cases for
-//      *        existence of gas phase only, in the theoretical liquid phase, we set the mole fraction
-//      *        of salt to  1e-10.
-//      * \param fluidState Thermodynamic state of the fluids
-//      * \param paramCache  Container for cache parameters
-//      * \param phaseIdx The phase index
-//      * \param targetFug target fugacity
-//      * \param phasePresence Presence of the phase
-//      *
-//      * The phase's fugacities must already be set.
-//      */
-//     template <class FluidState>
-//     static void solve(FluidState &fluidState,
-//                       ParameterCache &paramCache,
-//                       int phaseIdx,
-//                       int phasePresence,
-//                       const ComponentVector &targetFug)
-//     {
-//         // use a much more efficient method in case the phase is an
-//         // ideal mixture
-//         if (FluidSystem::isIdealMixture(phaseIdx))
-//         {
-//             solveIdealMix_(fluidState, paramCache, phaseIdx, phasePresence, targetFug);
-//             return;
-//         }
-//         else
-//             DUNE_THROW(NumericalProblem, "This constraint solver is not tested for non-ideal mixtures: Please refer computefromfugacities.hh for details" );
-//     }
-//
-// protected:
-//     // update the phase composition in case the phase is an ideal
-//     // mixture, i.e. the component's fugacity coefficients are
-//     // independent of the phase's composition.
-//     template <class FluidState>
-//     static void solveIdealMix_(FluidState &fluidState,
-//                                ParameterCache &paramCache,
-//                                int phaseIdx,
-//                                int phasePresence,
-//                                const ComponentVector &fugacities)
-//     {
-//         for (int i = 0; i < numComponents; ++ i)
-//         {
-//             Scalar phi = FluidSystem::fugacityCoefficient(fluidState,
-//                                                           paramCache,
-//                                                           phaseIdx,
-//                                                           i);
-//             Scalar gamma = phi * fluidState.pressure(phaseIdx);
-//             fluidState.setFugacityCoefficient(phaseIdx, i, phi);
-//             fluidState.setMoleFraction(phaseIdx, i, fugacities[i]/gamma);
-//             // Special situation for drying PM and n-phase only situation.set the mole fraction of salt to  1e-10.
-//             if (phaseIdx == 0 && i >= numMajorComponents && phasePresence == 2 /*nPhaseOnly*/)
-//                 fluidState.setMoleFraction(phaseIdx, i, 1.0e-10);
-//         }
-//
-//         paramCache.updatePhase(fluidState, phaseIdx);
-//
-//         Scalar rho = FluidSystem::density(fluidState, paramCache, phaseIdx);
-//         fluidState.setDensity(phaseIdx, rho);
-//         return;
-//     }
-};
 
 template <class Scalar, class FluidSystem>
 class DUNE_DEPRECATED_MSG("compositionFromFugacities2pncmin is deprecated. Use CompositionFromFugacities2pncmin (capital C) instead.")
diff --git a/dumux/material/constraintsolvers/computefromreferencephase2pncmin.hh b/dumux/material/constraintsolvers/computefromreferencephase2pncmin.hh
index 60bbe64e4ecb560c97079746158da6dbaffdb18e..6ccfec73319d3381af921154768771287567752e 100644
--- a/dumux/material/constraintsolvers/computefromreferencephase2pncmin.hh
+++ b/dumux/material/constraintsolvers/computefromreferencephase2pncmin.hh
@@ -29,7 +29,6 @@
 #ifndef DUMUX_COMPUTE_FROM_REFERENCE_PHASE_2PNCMIN_HH
 #define DUMUX_COMPUTE_FROM_REFERENCE_PHASE_2PNCMIN_HH
 
-#include <dumux/material/constraintsolvers/compositionfromfugacities.hh>
 #include "computefromreferencephase.hh"
 
 #include <dune/common/deprecated.hh>
@@ -72,113 +71,6 @@ class DUNE_DEPRECATED_MSG("ComputeFromReferencePhase2pNCMin is deprecated. Use C
   ComputeFromReferencePhase2pNCMin
   : public ComputeFromReferencePhase<Scalar, FluidSystem>
 { };
-// template <class Scalar, class FluidSystem>
-// class ComputeFromReferencePhase2pNCMin
-// {
-//     enum { numPhases = FluidSystem::numPhases };
-//     enum { numComponents = FluidSystem::numComponents };
-//     typedef Dumux::compositionFromFugacities2pncmin<Scalar, FluidSystem> compositionFromFugacities2pncmin;
-//     typedef Dune::FieldVector<Scalar, numComponents> ComponentVector;
-//
-// public:
-//     /*!
-//      * \brief Computes all quantities of a generic fluid state if a
-//      *        reference phase has been specified.
-//      *
-//      * This makes it is possible to specify just one phase and let the
-//      * remaining ones be calculated by the constraint solver. This
-//      * constraint solver assumes thermodynamic equilibrium. It assumes the
-//      * following quantities to be set:
-//      *
-//      * - composition (mole+mass fractions) of the *reference* phase
-//      * - temperature of the *all* phases
-//      * - saturations of *all* phases
-//      * - pressures of *all* phases
-//      *
-//      * after calling the solve() method the following quantities are
-//      * calculated in addition:
-//      *
-//      * - temperature of *all* phases
-//      * - density, molar density, molar volume of *all* phases
-//      * - composition in mole and mass fractions and molaries of *all* phases
-//      * - mean molar masses of *all* phases
-//      * - fugacity coefficients of *all* components in *all* phases
-//      * - if the setViscosity parameter is true, also dynamic viscosities of *all* phases
-//      * - if the setEnthalpy parameter is true, also specific enthalpies and internal energies of *all* phases
-//      *
-//      * \param fluidState Thermodynamic state of the fluids
-//      * \param paramCache  Container for cache parameters
-//      * \param refPhaseIdx The phase index of the reference phase
-//      * \param phasePresence The presence index of the reference phase
-//      * \param setViscosity Specify whether the dynamic viscosity of
-//      *                     each phase should also be set.
-//      * \param setEnthalpy Specify whether the specific
-//      *                    enthalpy/internal energy of each phase
-//      *                    should also be set.
-//      */
-//     template <class FluidState, class ParameterCache>
-//     static void solve(FluidState &fluidState,
-//                       ParameterCache &paramCache,
-//                       int refPhaseIdx,
-//                       int phasePresence,
-//                       bool setViscosity,
-//                       bool setEnthalpy)
-//     {
-//         ComponentVector fugVec;
-//
-//         // compute the density and enthalpy of the
-//         // reference phase
-//         paramCache.updatePhase(fluidState, refPhaseIdx);
-//         fluidState.setDensity(refPhaseIdx,
-//                               FluidSystem::density(fluidState,
-//                                                    paramCache,
-//                                                    refPhaseIdx));
-//
-//         if (setEnthalpy)
-//             fluidState.setEnthalpy(refPhaseIdx,
-//                                    FluidSystem::enthalpy(fluidState,
-//                                                          paramCache,
-//                                                          refPhaseIdx));
-//
-//         if (setViscosity)
-//             fluidState.setViscosity(refPhaseIdx,
-//                                     FluidSystem::viscosity(fluidState,
-//                                                            paramCache,
-//                                                            refPhaseIdx));
-//
-//         // compute the fugacities of all components in the reference phase
-//         for (int compIdx = 0; compIdx < numComponents; ++compIdx) {
-//             fluidState.setFugacityCoefficient(refPhaseIdx,
-//                                               compIdx,
-//                                               FluidSystem::fugacityCoefficient(fluidState,
-//                                                                                paramCache,
-//                                                                                refPhaseIdx,
-//                                                                                compIdx));
-//             fugVec[compIdx] = fluidState.fugacity(refPhaseIdx, compIdx);
-//         }
-//
-//         // compute all quantities for the non-reference phases
-//         for (int phaseIdx = 0; phaseIdx < numPhases; ++phaseIdx) {
-//             if (phaseIdx == refPhaseIdx)
-//                 continue; // reference phase is already calculated
-//
-//             compositionFromFugacities2pncmin::guessInitial(fluidState, paramCache, phaseIdx, phasePresence,fugVec);
-//             compositionFromFugacities2pncmin::solve(fluidState, paramCache, phaseIdx, phasePresence, fugVec);
-//
-//             if (setViscosity)
-//                 fluidState.setViscosity(phaseIdx,
-//                                         FluidSystem::viscosity(fluidState,
-//                                                                paramCache,
-//                                                                phaseIdx));
-//
-//             if (setEnthalpy)
-//                 fluidState.setEnthalpy(phaseIdx,
-//                                        FluidSystem::enthalpy(fluidState,
-//                                                              paramCache,
-//                                                              phaseIdx));
-//         }
-//     }
-// };
 
 } // end namespace Dumux