diff --git a/interfaces/matlab_experimental/Base/ThermoPhase.m b/interfaces/matlab_experimental/Base/ThermoPhase.m
index 6ab85f8a868..a5b8821ddeb 100644
--- a/interfaces/matlab_experimental/Base/ThermoPhase.m
+++ b/interfaces/matlab_experimental/Base/ThermoPhase.m
@@ -1030,11 +1030,7 @@ function display(tp)
         end
 
         function volume = get.V(tp)
-            if strcmp(tp.basis, 'molar')
-                volume = 1 / tp.molarDensity;
-            else
-                volume = 1 / tp.D;
-            end
+            volume = 1 / tp.D;
         end
 
         function moleFractions = get.X(tp)
@@ -1404,6 +1400,9 @@ function display(tp)
         function set.HP(tp, input)
             h = input{1};
             p = input{2};
+            if strcmp(tp.basis, 'molar')
+                h = h/tp.meanMolecularWeight;
+            end
             ctFunc('thermo_set_HP', tp.tpID, [h, p]);
         end
 
@@ -1442,6 +1441,10 @@ function display(tp)
         function set.SH(tp, input)
             s = input{1};
             h = input{2};
+            if strcmp(tp.basis, 'molar')
+                s = s/tp.meanMolecularWeight;
+                h = h/tp.meanMolecularWeight;
+            end
             ctFunc('thermo_set_SH', tp.tpID, [s, h]);
         end
 
@@ -1458,6 +1461,9 @@ function display(tp)
         function set.SP(tp, input)
             s = input{1};
             p = input{2};
+            if strcmp(tp.basis, 'molar')
+                s = s/tp.meanMolecularWeight;
+            end
             ctFunc('thermo_set_SP', tp.tpID, [s, p]);
         end
 
@@ -1474,6 +1480,9 @@ function display(tp)
         function set.ST(tp, input)
             s = input{1};
             t = input{2};
+            if strcmp(tp.basis, 'molar')
+                s = s/tp.meanMolecularWeight;
+            end
             ctFunc('thermo_set_ST', tp.tpID, [s, t]);
         end
 
@@ -1490,6 +1499,9 @@ function display(tp)
         function set.SV(tp, input)
             s = input{1};
             v = input{2};
+            if strcmp(tp.basis, 'molar')
+                s = s/tp.meanMolecularWeight;
+            end
             ctFunc('thermo_set_SV', tp.tpID, [s, v]);
         end
 
@@ -1500,7 +1512,7 @@ function display(tp)
 
         function set.SVY(tp, input)
             tp.Y = input{3};
-            tp.SP = input(1:2);
+            tp.SV = input(1:2);
         end
 
         function set.TD(tp, input)
@@ -1522,6 +1534,9 @@ function display(tp)
         function set.TH(tp, input)
             t = input{1};
             h = input{2};
+            if strcmp(tp.basis, 'molar')
+                h = h/tp.meanMolecularWeight;
+            end
             ctFunc('thermo_set_TH', tp.tpID, [t, h]);
         end
 
@@ -1576,6 +1591,9 @@ function display(tp)
         function set.UP(tp, input)
             u = input{1};
             p = input{2};
+            if strcmp(tp.basis, 'molar')
+                u = u/tp.meanMolecularWeight;
+            end
             ctFunc('thermo_set_UP', tp.tpID, [u, p]);
         end
 
@@ -1592,6 +1610,9 @@ function display(tp)
         function set.UV(tp, input)
             u = input{1};
             v = input{2};
+            if strcmp(tp.basis, 'molar')
+                u = u/tp.meanMolecularWeight;
+            end
             ctFunc('thermo_set_UV', tp.tpID, [u, v]);
         end
 
@@ -1608,6 +1629,9 @@ function display(tp)
         function set.VH(tp, input)
             v = input{1};
             h = input{2};
+            if strcmp(tp.basis, 'molar')
+                h = h/tp.meanMolecularWeight;
+            end
             ctFunc('thermo_set_VH', tp.tpID, [v, h]);
         end
 
diff --git a/test/matlab_experimental/ctTestThermo.m b/test/matlab_experimental/ctTestThermo.m
index 7377b3d9566..78e8bc441cd 100644
--- a/test/matlab_experimental/ctTestThermo.m
+++ b/test/matlab_experimental/ctTestThermo.m
@@ -233,8 +233,8 @@ function testNAtoms(self)
                 self.verifyEqual(n2, n);
             end
 
-            self.getInvalidValue('nAtoms', {'C', 'H2'}, 'outside valid range');
-            self.getInvalidValue('nAtoms', {'H', 'CH4'}, 'outside valid range');
+            self.getInvalidValue('nAtoms', {'C', 'H2'}, 'No such species');
+            self.getInvalidValue('nAtoms', {'H', 'CH4'}, 'No such element');
         end
 
         function testElementalMassFraction(self)
@@ -251,7 +251,7 @@ function testElementalMassFraction(self)
             self.verifyEqual(Zh, exp2, 'AbsTol', self.atol);
             self.verifyEqual(Zar, exp3, 'AbsTol', self.atol);
 
-            self.getInvalidValue('elementalMassFraction', {'C'}, 'outside valid range');
+            self.getInvalidValue('elementalMassFraction', {'C'}, 'No such element');
             self.getInvalidValue('elementalMassFraction', {5}, 'Wrong type');
         end
 
@@ -322,16 +322,6 @@ function testSingleGetters(self)
                   (GasConstant * self.phase.T);
             self.verifyEqual(val, exp, 'RelTol', self.rtol);
 
-            self.phase.basis = 'mass';
-            val = self.phase.V;
-            exp = 1/exp;
-            self.verifyEqual(val, exp, 'RelTol', self.rtol);
-            
-            self.phase.basis = 'molar';
-            val = self.phase.V;
-            exp = exp * self.phase.meanMolecularWeight;
-            self.verifyEqual(val, exp, 'RelTol', self.rtol);
-
             val = self.phase.molarDensity;
             exp = self.phase.D/self.phase.meanMolecularWeight;
             self.verifyEqual(val, exp, 'RelTol', self.rtol);
@@ -411,17 +401,11 @@ function testSetCompositionStringBad(self)
         end
 
         function testSetStateMole(self)
-            self.assumeFail(['Fails because multi-property setters could not', ...
-                            ' set correct values']);
-
             self.checkSetters(750, 0.07, [0.2, 0.1, 0.0, 0.3, 0.1, ...
                                   0.0, 0.0, 0.2, 0.1, 0.0]);
         end
 
         function testSetStateMass(self)
-            self.assumeFail(['Fails because multi-property setters could not', ...
-                            ' set correct values']);
-
             self.phase.basis = 'mass';
             self.checkSetters(500, 1.5, [0.1, 0.0, 0.0, 0.1, 0.4, ...
                                   0.2, 0.0, 0.0, 0.2, 0.0]);