diff --git a/Applications/ApplicationsLib/ProjectData.cpp b/Applications/ApplicationsLib/ProjectData.cpp
index 81ec937fc83de2070d25f7f20e2534be09db38fd..361c0eef88e634447db6e64d3de563f6c2efa5b6 100644
--- a/Applications/ApplicationsLib/ProjectData.cpp
+++ b/Applications/ApplicationsLib/ProjectData.cpp
@@ -1087,14 +1087,10 @@ void ProjectData::parseChemicalSystem(
         }
         else if (boost::iequals(chemical_solver, "PhreeqcKernel"))
         {
-            INFO(
-                "Configuring phreeqc interface for water chemistry "
-                "calculation by direct memory access.");
-
-            _chemical_system = ChemistryLib::createChemicalSolverInterface<
-                ChemistryLib::ChemicalSolver::PhreeqcKernel>(
-                _mesh_vec, process_id_to_component_name_map, *config,
-                output_directory);
+            OGS_FATAL(
+                "The chemical solver option of PhreeqcKernel is not accessible "
+                "for the time being. Please set 'Phreeqc'' as the chemical "
+                "solver for reactive transport modeling.");
         }
         else
         {
diff --git a/ProcessLib/ComponentTransport/Tests.cmake b/ProcessLib/ComponentTransport/Tests.cmake
index 5f0ee788fa6a1900be4e905fea63ef88de2e195f..8c363aa7d25408d40fd925db507b8908bf8d1e5f 100644
--- a/ProcessLib/ComponentTransport/Tests.cmake
+++ b/ProcessLib/ComponentTransport/Tests.cmake
@@ -1053,43 +1053,6 @@ AddTest(
     RUNTIME 25
 )
 
-AddTest(
-    NAME 1D_ReactiveMassTransport_PhreeqcKernel_EquilibriumPhaseBlockTest
-    PATH Parabolic/ComponentTransport/ReactiveTransport/EquilibriumPhase
-    EXECUTABLE ogs
-    EXECUTABLE_ARGS calcite_phreeqckernel.prj
-    WRAPPER time
-    TESTER vtkdiff
-    REQUIREMENTS NOT OGS_USE_MPI
-    DIFF_DATA
-    calcite_phreeqckernel_pcs_5_ts_42_t_4200.000000_expected.vtu calcite_phreeqckernel_ts_42_t_4200.000000.vtu pressure pressure 1e-6 1e-10
-    calcite_phreeqckernel_pcs_5_ts_84_t_8400.000000_expected.vtu calcite_phreeqckernel_ts_84_t_8400.000000.vtu pressure pressure 1e-6 1e-10
-    calcite_phreeqckernel_pcs_5_ts_126_t_12600.000000_expected.vtu calcite_phreeqckernel_ts_126_t_12600.000000.vtu pressure pressure 1e-6 1e-10
-    calcite_phreeqckernel_pcs_5_ts_168_t_16800.000000_expected.vtu calcite_phreeqckernel_ts_168_t_16800.000000.vtu pressure pressure 1e-6 1e-10
-    calcite_phreeqckernel_pcs_5_ts_210_t_21000.000000_expected.vtu calcite_phreeqckernel_ts_210_t_21000.000000.vtu pressure pressure 1e-6 1e-10
-    calcite_phreeqckernel_pcs_5_ts_42_t_4200.000000_expected.vtu calcite_phreeqckernel_ts_42_t_4200.000000.vtu Ca Ca 1e-10 1e-16
-    calcite_phreeqckernel_pcs_5_ts_84_t_8400.000000_expected.vtu calcite_phreeqckernel_ts_84_t_8400.000000.vtu Ca Ca 1e-10 1e-16
-    calcite_phreeqckernel_pcs_5_ts_126_t_12600.000000_expected.vtu calcite_phreeqckernel_ts_126_t_12600.000000.vtu Ca Ca 1e-10 1e-16
-    calcite_phreeqckernel_pcs_5_ts_168_t_16800.000000_expected.vtu calcite_phreeqckernel_ts_168_t_16800.000000.vtu Ca Ca 1e-10 1e-16
-    calcite_phreeqckernel_pcs_5_ts_210_t_21000.000000_expected.vtu calcite_phreeqckernel_ts_210_t_21000.000000.vtu Ca Ca 1e-10 1e-16
-    calcite_phreeqckernel_pcs_5_ts_42_t_4200.000000_expected.vtu calcite_phreeqckernel_ts_42_t_4200.000000.vtu Cl Cl 1e-10 1e-16
-    calcite_phreeqckernel_pcs_5_ts_84_t_8400.000000_expected.vtu calcite_phreeqckernel_ts_84_t_8400.000000.vtu Cl Cl 1e-10 1e-16
-    calcite_phreeqckernel_pcs_5_ts_126_t_12600.000000_expected.vtu calcite_phreeqckernel_ts_126_t_12600.000000.vtu Cl Cl 1e-10 1e-16
-    calcite_phreeqckernel_pcs_5_ts_168_t_16800.000000_expected.vtu calcite_phreeqckernel_ts_168_t_16800.000000.vtu Cl Cl 1e-10 1e-16
-    calcite_phreeqckernel_pcs_5_ts_210_t_21000.000000_expected.vtu calcite_phreeqckernel_ts_210_t_21000.000000.vtu Cl Cl 1e-10 1e-16
-    calcite_phreeqckernel_pcs_5_ts_42_t_4200.000000_expected.vtu calcite_phreeqckernel_ts_42_t_4200.000000.vtu H H 1e-10 1e-16
-    calcite_phreeqckernel_pcs_5_ts_84_t_8400.000000_expected.vtu calcite_phreeqckernel_ts_84_t_8400.000000.vtu H H 1e-10 1e-16
-    calcite_phreeqckernel_pcs_5_ts_126_t_12600.000000_expected.vtu calcite_phreeqckernel_ts_126_t_12600.000000.vtu H H 1e-10 1e-16
-    calcite_phreeqckernel_pcs_5_ts_168_t_16800.000000_expected.vtu calcite_phreeqckernel_ts_168_t_16800.000000.vtu H H 1e-10 1e-16
-    calcite_phreeqckernel_pcs_5_ts_210_t_21000.000000_expected.vtu calcite_phreeqckernel_ts_210_t_21000.000000.vtu H H 1e-10 1e-16
-    calcite_phreeqckernel_pcs_5_ts_42_t_4200.000000_expected.vtu calcite_phreeqckernel_ts_42_t_4200.000000.vtu Mg Mg 1e-10 1e-16
-    calcite_phreeqckernel_pcs_5_ts_84_t_8400.000000_expected.vtu calcite_phreeqckernel_ts_84_t_8400.000000.vtu Mg Mg 1e-10 1e-16
-    calcite_phreeqckernel_pcs_5_ts_126_t_12600.000000_expected.vtu calcite_phreeqckernel_ts_126_t_12600.000000.vtu Mg Mg 1e-10 1e-16
-    calcite_phreeqckernel_pcs_5_ts_168_t_16800.000000_expected.vtu calcite_phreeqckernel_ts_168_t_16800.000000.vtu Mg Mg 1e-10 1e-16
-    calcite_phreeqckernel_pcs_5_ts_210_t_21000.000000_expected.vtu calcite_phreeqckernel_ts_210_t_21000.000000.vtu Mg Mg 1e-10 1e-16
-    RUNTIME 10
-)
-
 AddTest(
     NAME 1D_ReactiveMassTransport_IPhreeqc_KineticReactantBlockTest
     PATH Parabolic/ComponentTransport/ReactiveTransport/KineticReactant
@@ -1127,38 +1090,6 @@ AddTest(
     RUNTIME 85
 )
 
-AddTest(
-    NAME 1D_ReactiveMassTransport_PhreeqcKernel_KineticReactantBlockTest
-    PATH Parabolic/ComponentTransport/ReactiveTransport/KineticReactant
-    EXECUTABLE ogs
-    EXECUTABLE_ARGS 1d_isofrac_phreeqckernel.prj
-    WRAPPER time
-    TESTER vtkdiff
-    REQUIREMENTS NOT OGS_USE_MPI
-    DIFF_DATA
-    1d_isofrac_phreeqckernel_pcs_3_ts_42_t_4200.000000_expected.vtu 1d_isofrac_phreeqckernel_ts_42_t_4200.000000.vtu pressure pressure 1e-6 1e-10
-    1d_isofrac_phreeqckernel_pcs_3_ts_84_t_8400.000000_expected.vtu 1d_isofrac_phreeqckernel_ts_84_t_8400.000000.vtu pressure pressure 1e-6 1e-10
-    1d_isofrac_phreeqckernel_pcs_3_ts_126_t_12600.000000_expected.vtu 1d_isofrac_phreeqckernel_ts_126_t_12600.000000.vtu pressure pressure 1e-6 1e-10
-    1d_isofrac_phreeqckernel_pcs_3_ts_168_t_16800.000000_expected.vtu 1d_isofrac_phreeqckernel_ts_168_t_16800.000000.vtu pressure pressure 1e-6 1e-10
-    1d_isofrac_phreeqckernel_pcs_3_ts_210_t_21000.000000_expected.vtu 1d_isofrac_phreeqckernel_ts_210_t_21000.000000.vtu pressure pressure 1e-6 1e-10
-    1d_isofrac_phreeqckernel_pcs_3_ts_42_t_4200.000000_expected.vtu 1d_isofrac_phreeqckernel_ts_42_t_4200.000000.vtu Synthetica Synthetica 1e-10 1e-16
-    1d_isofrac_phreeqckernel_pcs_3_ts_84_t_8400.000000_expected.vtu 1d_isofrac_phreeqckernel_ts_84_t_8400.000000.vtu Synthetica Synthetica 1e-10 1e-16
-    1d_isofrac_phreeqckernel_pcs_3_ts_126_t_12600.000000_expected.vtu 1d_isofrac_phreeqckernel_ts_126_t_12600.000000.vtu Synthetica Synthetica 1e-10 1e-16
-    1d_isofrac_phreeqckernel_pcs_3_ts_168_t_16800.000000_expected.vtu 1d_isofrac_phreeqckernel_ts_168_t_16800.000000.vtu Synthetica Synthetica 1e-10 1e-16
-    1d_isofrac_phreeqckernel_pcs_3_ts_210_t_21000.000000_expected.vtu 1d_isofrac_phreeqckernel_ts_210_t_21000.000000.vtu Synthetica Synthetica 1e-10 1e-16
-    1d_isofrac_phreeqckernel_pcs_3_ts_42_t_4200.000000_expected.vtu 1d_isofrac_phreeqckernel_ts_42_t_4200.000000.vtu Syntheticb Syntheticb 1e-10 1e-16
-    1d_isofrac_phreeqckernel_pcs_3_ts_84_t_8400.000000_expected.vtu 1d_isofrac_phreeqckernel_ts_84_t_8400.000000.vtu Syntheticb Syntheticb 1e-10 1e-16
-    1d_isofrac_phreeqckernel_pcs_3_ts_126_t_12600.000000_expected.vtu 1d_isofrac_phreeqckernel_ts_126_t_12600.000000.vtu Syntheticb Syntheticb 1e-10 1e-16
-    1d_isofrac_phreeqckernel_pcs_3_ts_168_t_16800.000000_expected.vtu 1d_isofrac_phreeqckernel_ts_168_t_16800.000000.vtu Syntheticb Syntheticb 1e-10 1e-16
-    1d_isofrac_phreeqckernel_pcs_3_ts_210_t_21000.000000_expected.vtu 1d_isofrac_phreeqckernel_ts_210_t_21000.000000.vtu Syntheticb Syntheticb 1e-10 1e-16
-    1d_isofrac_phreeqckernel_pcs_3_ts_42_t_4200.000000_expected.vtu 1d_isofrac_phreeqckernel_ts_42_t_4200.000000.vtu H H 1e-10 1e-16
-    1d_isofrac_phreeqckernel_pcs_3_ts_84_t_8400.000000_expected.vtu 1d_isofrac_phreeqckernel_ts_84_t_8400.000000.vtu H H 1e-10 1e-16
-    1d_isofrac_phreeqckernel_pcs_3_ts_126_t_12600.000000_expected.vtu 1d_isofrac_phreeqckernel_ts_126_t_12600.000000.vtu H H 1e-10 1e-16
-    1d_isofrac_phreeqckernel_pcs_3_ts_168_t_16800.000000_expected.vtu 1d_isofrac_phreeqckernel_ts_168_t_16800.000000.vtu H H 1e-10 1e-16
-    1d_isofrac_phreeqckernel_pcs_3_ts_210_t_21000.000000_expected.vtu 1d_isofrac_phreeqckernel_ts_210_t_21000.000000.vtu H H 1e-10 1e-16
-    RUNTIME 85
-)
-
 AddTest(
     NAME 1D_ReactiveMassTransport_ChemicalFormulaFlagTest
     PATH Parabolic/ComponentTransport/ReactiveTransport/KineticReactant