diff --git a/examples/reactmicp/chloride/migration.cpp b/examples/reactmicp/chloride/migration.cpp
index d680eb1..cfd5b32 100644
--- a/examples/reactmicp/chloride/migration.cpp
+++ b/examples/reactmicp/chloride/migration.cpp
@@ -1,296 +1,296 @@
 /* =============================================================================
 
  Copyright (c) 2014-2017 F. Georget <fabieng@princeton.edu> Princeton University
  Copyright (c) 2017 F. Georget <fabien.georget@epfl.ch> EPFL
  All rights reserved.
 
 
 Redistribution and use in source and binary forms, with or without modification,
 are permitted provided that the following conditions are met:
 
     1. Redistributions of source code must retain the above copyright notice,
     this list of conditions and the following disclaimer.
 
     2. Redistributions in binary form must reproduce the above copyright notice,
     this list of conditions and the following disclaimer in the documentation
     and/or other materials provided with the distribution.
 
     3. Neither the name of the copyright holder nor the names of its
     contributors may be used to endorse or promote products derived from this
     software without specific prior written permission.
 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
 ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. *
 
 ============================================================================= */
 
 #include "reactmicp/systems/chloride/variables.hpp"
 #include "reactmicp/systems/chloride/variables_interface.hpp"
 #include "reactmicp/systems/chloride/transport_stagger.hpp"
 #include "reactmicp/systems/chloride/boundary_conditions.hpp"
 
 #include "specmicp_common/log.hpp"
 
 #include "specmicp_database/io/configuration.hpp"
 
 #include "specmicp/adimensional/adimensional_system_solver.hpp"
 #include "specmicp/problem_solver/smart_solver.hpp"
 #include "specmicp/problem_solver/reactant_box.hpp"
 #include "specmicp/adimensional/adimensional_system_solver_structs.hpp"
 
 #include "reactmicp/systems/chloride/transport_program_struct.hpp"
 #include "reactmicp/solver/staggers_base/stagger_structs.hpp"
 
 #include "dfpm/solver/parabolic_structs.hpp"
 
 #include "specmicp_common/log.hpp"
 
 #include <vector>
 #include <iostream>
 #include <fstream>
 
 using namespace specmicp;
 using namespace specmicp::reactmicp::systems::chloride;
 
 
 mesh::Mesh1DPtr get_mesh(scalar_t thickness, scalar_t dx)
 {
     mesh::Uniform1DMeshGeometry amesh;
     amesh.dx = dx;
     amesh.section = (121.0)*3.14;
     amesh.nb_nodes = std::floor(thickness/dx)+1;
 
     return mesh::uniform_mesh1d(amesh);
 }
 
 
 specmicp::database::RawDatabasePtr get_database()
 {
     static database::RawDatabasePtr raw_data {nullptr};
     if (raw_data == nullptr)
     {
         specmicp::database::Database thedatabase(CEMDATA_PATH);
         //thedatabase.keep_only_components({"H2O","H[+]", "Na[+]", "Cl[-]", "Ca[2+]", "SO4[2-]"});
         thedatabase.keep_only_components({"H2O","H[+]", "Na[+]", "Cl[-]", "Ca[2+]"});
         thedatabase.swap_components({{"H[+]", "HO[-]"}});
         thedatabase.remove_half_cell_reactions();
         raw_data = thedatabase.get_database();
         raw_data->freeze_db();
     }
     return raw_data;
 }
 
 specmicp::AdimensionalSystemSolution initial_conditions(database::RawDatabasePtr data, units::UnitsSet tunits)
 {
     ReactantBox box(data, tunits);
     box.set_solution(0.3, "L/L");
     box.set_saturated_system();
     box.set_inert_volume_fraction(0.7);
     box.add_aqueous_species("NaCl", 0.001, "mol/kg");
     box.add_aqueous_species("NaOH", 0.3, "mol/kg");
     box.add_aqueous_species("Ca(OH)2", 0.02, "mol/kg");
     //box.add_aqueous_species("CaSO4", 0.01, "mol/kg");
 
     SmartAdimSolver solver(data, box, false);
     if (! solver.solve()) {
         throw std::runtime_error("Cannot solve init cond");
     }
 
     return solver.get_solution();
 }
 
 
 static specmicp::AdimensionalSystemSolution boundary_conditions(database::RawDatabasePtr data, units::UnitsSet tunits)
 {
     ReactantBox box(data, tunits);
     box.set_solution(0.3, "L/L");
     box.set_saturated_system();
     box.set_inert_volume_fraction(0.7);
 
     box.add_aqueous_species("NaOH", 0.3, "mol/kg");
     box.add_aqueous_species("NaCl", 0.5, "mol/kg");
     //box.add_aqueous_species("Ca(OH)2", 0.01, "mol/kg");
     //box.add_aqueous_species("CaSO4", 0.01, "mol/kg");
 
 
     SmartAdimSolver solver(data, box, false);
     if (! solver.solve()) {
         throw std::runtime_error("Cannot solve bound cond");
     }
     return solver.get_solution();
 }
 
-static void chemitry_step(ChlorideVariables* vars)
+static void chemistry_step(ChlorideVariables* vars)
 {
     RawDatabasePtr data = vars->get_database();
 
     for (int node=1; node<vars->get_mesh()->nb_nodes(); ++node) {
         AdimensionalSystemConstraints constraints;
         Vector total_conc = Vector::Zero(data->nb_component());
         for (auto i: data->range_aqueous_component())
         {
             total_conc(i) = vars->porosity(node)*vars->main_variables()(vars->dof_component(node, i));
         }
         constraints.set_total_concentrations(total_conc);
         constraints.set_saturated_system();
         constraints.set_inert_volume_fraction(0.7);
 
         AdimensionalSystemSolution sol = vars->adim_solution(node);
         Vector x = sol.main_variables;
         AdimensionalSystemSolver solver(data, constraints, vars->adim_solution(node));
         solver.get_options().units_set = vars->get_units();
         solver.get_options().system_options.cutoff_total_concentration = 1e-14;
         solver.get_options().solver_options.set_tolerance(1e-6,1e-14);
         micpsolver::MiCPPerformance perf = solver.solve(x, false);
 
         if (perf.return_code < micpsolver::MiCPSolverReturnCode::Success) {
             std::cout << "\n === \n" << total_conc << "\n === \n" << std::endl;
             throw std::runtime_error("Failed to solve chemistry step");
         }
         auto adim_sol = solver.get_raw_solution(x);
         vars->set_adim_solution(node, adim_sol);
 
     }
 }
 
 int main()
 {
     std::cerr.flush();
     specmicp::logger::ErrFile::stream() = &std::cout;
     specmicp::stdlog::ReportLevel() = specmicp::logger::Warning;
 
     auto tunits = units::SI_units;
     tunits.length = units::LengthUnit::centimeter;
 
     mesh::Mesh1DPtr amesh = get_mesh(3.0, 0.1);
     const index_t nb_nodes = amesh->nb_nodes();
     std::cout << "nb nodes : " << nb_nodes << std::endl;
 
     auto data = get_database();
 
     index_t i_na = data->get_id_component("Na[+]");
     index_t i_cl = data->get_id_component("Cl[-]");
     index_t i_ca = data->get_id_component("Ca[2+]");
-    index_t i_h  = data->get_id_component("H[+]");
-    index_t i_ho = data->get_id_component("HO[-]");
+    //index_t i_h  = data->get_id_component("H[+]");
+    //index_t i_ho = data->get_id_component("HO[-]");
 
     ChlorideVariablesInterface interface(data, amesh, tunits);
     std::vector<AdimensionalSystemSolution> sols = {
         initial_conditions(data, tunits), boundary_conditions(data, tunits)};
 
     std::vector<index_t> indices(nb_nodes, 0);
     indices[0] = 1;
     interface.set_adim_solutions(indices, sols);
 
     interface.set_diffusion_coefficient_component(i_na, 1.334e-5);
     interface.set_default_diffusion_coefficient_component(1.0e-5);
     interface.set_default_diffusion_coefficient_aqueous(1.0e-5);
     interface.set_diffusion_coefficient_component("Cl[-]", 2.032e-5);
     interface.set_diffusion_coefficient_aqueous("H[+]", 9.311e-5);
     interface.set_diffusion_coefficient_component("HO[-]", 5.273e-5);
     //interface.set_diffusion_coefficient_aqueous("HSO4[-]", 1.385e-5);
     //interface.set_diffusion_coefficient_component("SO4[2-]", 1.065e-5);
 
     interface.set_default_diffusion_resistance_factor(5.0e-2);
 
     interface.set_potential(0, 0.0);
     interface.set_potential(nb_nodes-1, 1.0);
 
     auto variables = interface.get_variables();
 
     std::shared_ptr<BoundaryConditions> bcs = BoundaryConditions::make(amesh, data);
 
     bcs->fix_concentrations_node(0);
     bcs->fix_potential_node(0);
 
     bcs->fix_concentrations_node(nb_nodes-1);
     bcs->fix_potential_node(nb_nodes-1);
 
 
     ChlorideTransportStagger stagger(variables, bcs);
 
     stagger.initialize(variables.get());
     stagger.set_approximation_method(AdimSolutionPerturbationMethod::component);
     auto& opts = stagger.get_options();
     opts.absolute_tolerance = 1e-12;
     opts.residuals_tolerance = 1e-6;
     opts.step_tolerance = 1e-14;
     opts.quasi_newton = 1;
     opts.maximum_step_length = 1e3;
     opts.maximum_iterations = 500;
     opts.alpha = 1;
 
 
     index_t nb_iter = 10000;
     index_t dt = 50;
 
     std::vector<scalar_t> currents(nb_iter);
 
     std::ofstream cur_file("migration_current.csv");
     cur_file << "Time(s)\tCurrent\n";
     for (int i=0; i<nb_iter; ++i) {
         std::cout << "timestep : " << i << std::endl;
         stagger.initialize_timestep(dt, variables.get());
         auto res_0 = stagger.get_residual_0(variables.get());
 
         auto retcode = stagger.restart_timestep(variables.get());
 
         std::cout << "Return code : " << static_cast<int>(retcode) << std::endl;
         auto res = stagger.get_residual(variables.get());
         //std::cout << res <<  " - " << res/res_0 << std::endl;
 
 
         if (retcode < reactmicp::solver::StaggerReturnCode::NotConvergedYet) {
             throw std::runtime_error("Failed to solve iteration "+ std::to_string(i) +". Retcode : "+std::to_string(static_cast<int>(retcode)));
         }
         if (i%2==0) {
                 cur_file << (i+1)*dt << "\t" << variables->current()(0) << "\n";
         }
     }
     cur_file.close();
 
     //std::cout << " ======= \n" << current << std::endl;
 
     //std::cout << "[\n";
     //for (index_t i=0; i<nb_iter; ++i) {
     //    std::cout << "[" << i*dt/3600 << ", " << current(i) << "],\n";
     //}
     //std::cout << "]" << std::endl;
 
     std::ofstream outfile("migration_end.csv");
 
     outfile << "Coords\tNa[+]\tCl[-]\tCa[2+]\tpH\tPotential\tCharge\n";
     for (index_t node: range(amesh->nb_nodes()))
     {
         AdimensionalSystemSolutionExtractor extr(variables->adim_solution(node), data, tunits);
         auto rho_w = extr.density_water()*1000.;
         auto cl = extr.molality_component(i_cl)*rho_w;
         auto na = extr.molality_component(i_na)*rho_w;
         auto ca  = extr.molality_component(i_ca)*rho_w;
         auto ph = extr.pH();
 
         outfile << amesh->get_position(node) << "\t"
                   << na << "\t"
                   << cl << "\t"
                   << ca << "\t"
                   << ph << "\t"
                   << variables->main_variables()(variables->dof_potential(node)) << "\t"
                   << extr.charge_balance()*rho_w << "\t"
                   << "\n";
     }
     outfile.close();
 
 
 
 }
 
 
 
diff --git a/src/reactmicp/systems/chloride/variables_interface.cpp b/src/reactmicp/systems/chloride/variables_interface.cpp
index 5e2424c..718fd64 100644
--- a/src/reactmicp/systems/chloride/variables_interface.cpp
+++ b/src/reactmicp/systems/chloride/variables_interface.cpp
@@ -1,136 +1,142 @@
 /* =============================================================================
 
  Copyright (c) 2014-2017 F. Georget <fabieng@princeton.edu> Princeton University
  Copyright (c) 2017 F. Georget <fabien.georget@epfl.ch> EPFL
  All rights reserved.
 
 
 Redistribution and use in source and binary forms, with or without modification,
 are permitted provided that the following conditions are met:
 
     1. Redistributions of source code must retain the above copyright notice,
     this list of conditions and the following disclaimer.
 
     2. Redistributions in binary form must reproduce the above copyright notice,
     this list of conditions and the following disclaimer in the documentation
     and/or other materials provided with the distribution.
 
     3. Neither the name of the copyright holder nor the names of its
     contributors may be used to endorse or promote products derived from this
     software without specific prior written permission.
 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
 ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. *
 
 ============================================================================= */
 
 #include "variables_interface.hpp"
 
 #include "specmicp_common/eigen/helpers.hpp"
 
 namespace specmicp {
 namespace reactmicp {
 namespace systems {
 namespace chloride {
 
 ChlorideVariablesInterface::ChlorideVariablesInterface(
         RawDatabasePtr adata,
         mesh::Mesh1DPtr amesh,
         const units::UnitsSet& tunits
         ):
     DatabaseHolder(adata),
-    units::UnitBaseClass(tunits)
+    units::UnitBaseClass(tunits),
+    m_mesh(amesh)
 {
     m_vars = std::make_shared<ChlorideVariables>(adata, amesh, tunits);
 
     init_storage(amesh->nb_nodes(), m_vars->ndof());
 }
 
 void ChlorideVariablesInterface::init_storage(index_t nnp, index_t ndof)
 {
     const auto tot_dof = nnp*ndof;
 
     m_vars->m_main_variables = Vector::Zero(tot_dof);
     m_vars->m_predictors = Vector::Zero(tot_dof);
     m_vars->m_velocities = Vector::Zero(tot_dof);
 
     m_vars->m_total_immobile_concs = Vector::Zero(tot_dof);
     m_vars->m_predictor_immobile = Vector::Zero(tot_dof);
     m_vars->m_velocity_immobile = Vector::Zero(tot_dof);
 
     m_vars->m_porosity = Vector::Zero(nnp);
     m_vars->m_predictor_porosity = Vector::Zero(nnp);
     m_vars->m_velocity_porosity = Vector::Zero(nnp);
 
     m_vars->m_inert_volume_fractions = Vector::Zero(nnp);
     m_vars->m_adim_solution.reserve(nnp);
 
     m_vars->m_transport_rates = Vector::Zero(tot_dof);
     m_vars->m_chemistry_rates = Vector::Zero(tot_dof);
 
     auto data = m_vars->get_database();
 
     m_vars->m_intrinsic_diffusion_i = Vector::Zero(data->nb_component());
     m_vars->m_intrinsic_diffusion_j = Vector::Zero(data->nb_aqueous());
 
     m_vars->m_resistance_factor = Vector::Zero(nnp);
 
 
 }
 
 void ChlorideVariablesInterface::set_from_adim_solution(index_t node, const AdimensionalSystemSolution& solution)
 {
     AdimensionalSystemSolutionExtractor extr(solution, m_vars->get_database(), m_vars->get_units());
 
     for (auto i: get_database()->range_aqueous_component())
     {
         m_vars->m_main_variables(m_vars->dof_component(node, i)) = extr.density_water()*extr.total_aqueous_concentration(i);
         m_vars->m_total_immobile_concs(m_vars->dof_component(node, i)) = extr.total_immobile_concentration(i);
 
         m_vars->m_porosity(node) = extr.porosity();
         m_vars->m_inert_volume_fractions(node) = extr.volume_fraction_inert();
     }
 }
 
 void ChlorideVariablesInterface::set_adim_solutions(std::vector<index_t> indices, std::vector<AdimensionalSystemSolution> solutions)
 {
     for (auto node: RangeIterator<index_t>(m_vars->m_mesh->nb_nodes())) {
         AdimensionalSystemSolution& sol = solutions[indices[node]];
         m_vars->m_adim_solution.push_back(sol);
         set_from_adim_solution(node, sol);
     }
 }
 
 void ChlorideVariablesInterface::set_default_diffusion_coefficient_component(scalar_t value)
 {
     utils::set_if_zero(m_vars->m_intrinsic_diffusion_i, value);
 }
 
 void ChlorideVariablesInterface::set_default_diffusion_coefficient_aqueous(scalar_t value)
 {
     utils::set_if_zero(m_vars->m_intrinsic_diffusion_j, value);
 }
 
 void ChlorideVariablesInterface::set_default_diffusion_resistance_factor(scalar_t value)
 {
     utils::set_if_zero(m_vars->m_resistance_factor, value);
 }
 
+void ChlorideVariablesInterface::set_diffusion_resistance_factors(Vector& vec_res) {
+    specmicp_assert(vec_res.rows() == m_mesh->nb_nodes());
+    m_vars->m_resistance_factor = vec_res;
+}
+
 
 void ChlorideVariablesInterface::set_potential(index_t node, scalar_t value)
 {
     m_vars->m_main_variables(m_vars->dof_potential(node)) = value;
 }
 
 } // namespace chloride
 } // namespace systems
 } // namespace reactmicp
 } // namespace specmicp
diff --git a/src/reactmicp/systems/chloride/variables_interface.hpp b/src/reactmicp/systems/chloride/variables_interface.hpp
index a8f7b30..4a1599d 100644
--- a/src/reactmicp/systems/chloride/variables_interface.hpp
+++ b/src/reactmicp/systems/chloride/variables_interface.hpp
@@ -1,149 +1,147 @@
 /* =============================================================================
 
  Copyright (c) 2014-2017 F. Georget <fabieng@princeton.edu> Princeton University
  Copyright (c) 2017 F. Georget <fabien.georget@epfl.ch> EPFL
  All rights reserved.
 
 
 Redistribution and use in source and binary forms, with or without modification,
 are permitted provided that the following conditions are met:
 
     1. Redistributions of source code must retain the above copyright notice,
     this list of conditions and the following disclaimer.
 
     2. Redistributions in binary form must reproduce the above copyright notice,
     this list of conditions and the following disclaimer in the documentation
     and/or other materials provided with the distribution.
 
     3. Neither the name of the copyright holder nor the names of its
     contributors may be used to endorse or promote products derived from this
     software without specific prior written permission.
 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
 ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. *
 
 ============================================================================= */
 
 #ifndef REACTMICP_CHLORIDE_VARIABLESINTERFACE_HPP
 #define REACTMICP_CHLORIDE_VARIABLESINTERFACE_HPP
 
 #include "specmicp_common/types.hpp"
 #include <memory>
 #include "variables.hpp"
 
 #include "specmicp_database/database_holder.hpp"
 
 namespace specmicp {
 
 namespace reactmicp {
 namespace systems {
 namespace chloride {
 
 class SPECMICP_DLL_PUBLIC ChlorideVariablesInterface:
     public database::DatabaseHolder,
     public units::UnitBaseClass
 {
 public:
     ChlorideVariablesInterface(
             RawDatabasePtr adata,
             mesh::Mesh1DPtr amesh,
             const units::UnitsSet& tunits
             );
 
     // other data
     ChlorideVariablesPtr get_variables() { return m_vars; }
     ChlorideVariables*   get_raw_variables() { return m_vars.get(); }
 
     mesh::Mesh1DPtr get_mesh() { return m_mesh;}
 
     // Main variables
 
 
     //! \brief Set the adimensional solutions and related variables
     //!
     //!  Also set the main variables, porosity, and inert volume fraction
     void set_adim_solutions(std::vector<index_t> indices, std::vector<AdimensionalSystemSolution> solutions);
 
     //! \brief Set the fluid velocity
     void set_fluid_velocity(scalar_t fluid_vel);
 
     // Diffusion
     // =========
 
     //! \brief Diffusion coefficient of components in a water
     //!
     //! The size of vec_diff must be the number of components
     //! (all not just aqueous components)
     void set_diffusion_coefficient_components(Vector& vec_diff) {
         specmicp_assert(vec_diff.rows() == m_data->nb_component());
         m_vars->m_intrinsic_diffusion_i = vec_diff;
     }
     //! \brief Diffusion coefficient of a component in a water
     void set_diffusion_coefficient_component(std::string label, scalar_t value) {
         m_vars->m_intrinsic_diffusion_i(get_database()->get_id_component(label)) = value;
     }
     //! \brief Diffusion coefficient of a component in a water
     void set_diffusion_coefficient_component(index_t i, scalar_t value) {
         m_vars->m_intrinsic_diffusion_i(i) = value;
     }
     //! \brief Set the default value for the diffusion coefficients of the component
     void set_default_diffusion_coefficient_component(scalar_t value);
 
     //! \brief Diffusion coefficient of aqueous species in a water
     //!
     //! The size of vec_diff must be the number of secondary aqueous species
     void set_diffusion_coefficient_aqueous(Vector& vec_diff) {
         specmicp_assert(vec_diff.rows() == m_data->nb_aqueous());
         m_vars->m_intrinsic_diffusion_j = vec_diff;
     }
     //! \brief Diffusion coefficient of an aqueous species in a water
     void set_diffusion_coefficient_aqueous(index_t j, scalar_t value) {
         m_vars->m_intrinsic_diffusion_j(j) = value;
     }
     //! \brief Diffusion coefficient of an aqueous species in a water
     void set_diffusion_coefficient_aqueous(std::string label, scalar_t value) {
         m_vars->m_intrinsic_diffusion_j(get_database()->get_id_aqueous(label)) = value;
     }
     //! \brief Set the default value for the diffusion coefficients of the aq. species
     void set_default_diffusion_coefficient_aqueous(scalar_t value);
 
     //! \brief Set the resistance factors
     //!
     //! The size of 'vec_res' must be the number of nodes
-    void set_diffusion_resistance_factors(Vector& vec_res) {
-        specmicp_assert(vec_res.rows() == m_mesh->nb_nodes());
-        m_vars->m_resistance_factor = vec_res;
-    }
+    void set_diffusion_resistance_factors(Vector& vec_res);
+
     //! \brief Set the resistance factor for a node
     void set_diffusion_resistance_factor(index_t node, scalar_t value) {
         m_vars->m_resistance_factor(node) = value;
     }
     //! \brief Set the default resistance factor
     void set_default_diffusion_resistance_factor(scalar_t value);
 
     //! \brief Set the potential
     void set_potential(index_t node, scalar_t value);
 private:
     mesh::Mesh1DPtr m_mesh;
     std::shared_ptr<ChlorideVariables> m_vars {nullptr};
 
     void init_storage(index_t nnp, index_t ndof);
     void set_from_adim_solution(index_t node, const AdimensionalSystemSolution& solution);
 
 
 };
 
 } // namespace chloride
 } // namespace systems
 } // namespace reactmicp
 } // namespace specmicp
 
 #endif // REACTMICP_CHLORIDE_VARIABLESINTERFACE_HPP