Index: src/Deltares.DSoilModel.Data/DSoilModelTransformer.cs
===================================================================
diff -u -r6 -r99
--- src/Deltares.DSoilModel.Data/DSoilModelTransformer.cs	(.../DSoilModelTransformer.cs)	(revision 6)
+++ src/Deltares.DSoilModel.Data/DSoilModelTransformer.cs	(.../DSoilModelTransformer.cs)	(revision 99)
@@ -4,19 +4,21 @@
 
 namespace Deltares.DSoilModel.Data
 {
+    /// <summary>
+    /// Conversion between measured and design values for DSoilModel
+    /// note: in DSoilModel the default transformation of design values is replaced by ActualValue field of Stochast
+    /// </summary>
+    /// <seealso cref="Deltares.Standard.ITransformer" />
     public class DSoilModelTransformer : ITransformer
     {
         public double GetTransformedValue(object owner, string property, double measuredValue)
         {
             if (owner is Soil)
             {
-                var stochasts = ((Soil)owner).GetStochasts();
-                foreach (var stochast in stochasts)
+                var stochast = ((Soil)owner).GetStochast(property);
+                if (stochast != null)
                 {
-                    if (stochast.AssociatedPropertyName == property)
-                    {
-                        return stochast.ActualValue;
-                    }
+                    return stochast.ActualValue;    
                 }
             }
             return measuredValue;
@@ -26,16 +28,13 @@
         {
             if (owner is Soil)
             {
-                var stochasts = ((Soil)owner).GetStochasts();
-                foreach (var stochast in stochasts)
+                var stochast = ((Soil)owner).GetStochast(property);
+                if (stochast != null)
                 {
-                    if (stochast.AssociatedPropertyName == property)
-                    {
-                        stochast.ActualValue = transformedValue;
+                    stochast.ActualValue = transformedValue;
 
-                        // In property setter, the return value of this method is used to set the stochast mean
-                        return stochast.Mean;
-                    }
+                    // In property setter, the return value of this method is used to set the stochast mean
+                    return stochast.Mean;
                 }
             }
             return transformedValue;
Index: src/Deltares.DSoilModel.Tests/DSoilModelTransformerTest.cs
===================================================================
diff -u
--- src/Deltares.DSoilModel.Tests/DSoilModelTransformerTest.cs	(revision 0)
+++ src/Deltares.DSoilModel.Tests/DSoilModelTransformerTest.cs	(revision 99)
@@ -0,0 +1,76 @@
+using System;
+using System.Security.Cryptography.X509Certificates;
+using System.Windows.Forms;
+using Deltares.DSoilModel.Data;
+using Deltares.Geotechnics;
+using Deltares.Probabilistic;
+using Deltares.Standard;
+using Deltares.Standard.Reflection;
+using NUnit.Framework;
+
+namespace Deltares.DSoilModel.Tests
+{
+    [TestFixture]
+    public class DSoilModelTransformerTest
+    {
+        private ITransformer oldTransformer;
+        private bool oldReliability;
+       
+        [SetUp]
+        public void Setup()
+        {
+            oldTransformer = TransformerManager.Transformer;
+            oldReliability = ReliabilityView.IsReliability;
+        }
+
+        [TearDown]
+        public void TearDown()
+        {
+            TransformerManager.Transformer = oldTransformer;
+            ReliabilityView.IsReliability = oldReliability;
+        }
+
+        [Test]
+        [TestCase(true)]
+        [TestCase(false)]
+        public void TransformerMapsSoilPropertiesToActualValues(bool reliability)
+        {
+            ReliabilityView.IsReliability = reliability;
+            
+            var transformer = new DSoilModelTransformer();
+            TransformerManager.Transformer = transformer;
+
+            var soil = new Soil();
+            var stochastProperties = PropertyInfoSupport.GetPropertiesOfType(typeof(Soil), typeof(Stochast));
+            
+            foreach (BindPropertyInfo stochastPropertyInfo in stochastProperties)
+            {
+                var stochast = (Stochast)stochastPropertyInfo.GetValue(soil, null);
+                stochast.ActualValue = 1.23;
+                stochast.Mean = double.NaN;
+
+                // call transformer directly, always returns ActualValue, ignoring measuredValue input
+                Assert.AreEqual(1.23, transformer.GetTransformedValue(soil, stochast.AssociatedPropertyName, 9999));
+
+                // check associated property indeed returns ActualValue
+                var propertyInfo = typeof(Soil).GetProperty(stochast.AssociatedPropertyName);
+                var value = propertyInfo.GetValue(soil, null);
+                if (propertyInfo.PropertyType == typeof(double))
+                {
+                    Assert.AreEqual(1.23, value);    
+                }
+
+                // reverse transformation, directly
+                transformer.SetTransformedValue(soil, stochast.AssociatedPropertyName, 3.21);
+                Assert.AreEqual(3.21, stochast.ActualValue);
+
+                // reverse via associated property
+                if (propertyInfo.PropertyType == typeof(double))
+                {
+                    propertyInfo.SetValue(soil, 9.87, null);
+                    Assert.AreEqual(9.87, stochast.ActualValue);
+                }
+            }
+        }
+    }
+}