diff --git a/tests/test_filter_cell/materials.xml b/tests/test_filter_cell/materials.xml
index 845fdf1906..9c0b74f3f1 100644
--- a/tests/test_filter_cell/materials.xml
+++ b/tests/test_filter_cell/materials.xml
@@ -59,7 +59,7 @@
     <nuclide name="O-16" ao="1.0" />
     <nuclide name="B-10" ao="6.490e-4" />
     <nuclide name="B-11" ao="2.689e-3" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Hot borated water -->
@@ -69,7 +69,7 @@
     <nuclide name="O-16" ao="1.0" />
     <nuclide name="B-10" ao="6.490e-4" />
     <nuclide name="B-11" ao="2.689e-3" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- RPV Composition -->
@@ -128,7 +128,7 @@
     <nuclide name="Cr-52" wo="0.145407678031" />
     <nuclide name="Cr-53" wo="0.016806340306" />
     <nuclide name="Cr-54" wo="0.004261520857" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Upper radial reflector / Top plate region -->
@@ -155,7 +155,7 @@
     <nuclide name="Cr-52" wo="0.146766614995" />
     <nuclide name="Cr-53" wo="0.01696340737" />
     <nuclide name="Cr-54" wo="0.004301347765" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom plate region -->
@@ -182,7 +182,7 @@
     <nuclide name="Cr-52" wo="0.157390026871" />
     <nuclide name="Cr-53" wo="0.018191270146" />
     <nuclide name="Cr-54" wo="0.004612692337" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom nozzle region -->
@@ -209,7 +209,7 @@
     <nuclide name="Cr-52" wo="0.124142524198" />
     <nuclide name="Cr-53" wo="0.014348496148" />
     <nuclide name="Cr-54" wo="0.003638294506" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Top nozzle region -->
@@ -236,7 +236,7 @@
     <nuclide name="Cr-52" wo="0.107931450781" />
     <nuclide name="Cr-53" wo="0.012474806806" />
     <nuclide name="Cr-54" wo="0.003163190107" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Top of Fuel Assemblies -->
@@ -251,7 +251,7 @@
     <nuclide name="Zr-92" wo="0.14759527104" />
     <nuclide name="Zr-94" wo="0.15280552077" />
     <nuclide name="Zr-96" wo="0.02511169542" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom of Fuel Assemblies -->
@@ -266,7 +266,7 @@
     <nuclide name="Zr-92" wo="0.1274914944" />
     <nuclide name="Zr-94" wo="0.1319920622" />
     <nuclide name="Zr-96" wo="0.0216912612" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
 </materials>
diff --git a/tests/test_filter_cellborn/materials.xml b/tests/test_filter_cellborn/materials.xml
index 845fdf1906..9c0b74f3f1 100644
--- a/tests/test_filter_cellborn/materials.xml
+++ b/tests/test_filter_cellborn/materials.xml
@@ -59,7 +59,7 @@
     <nuclide name="O-16" ao="1.0" />
     <nuclide name="B-10" ao="6.490e-4" />
     <nuclide name="B-11" ao="2.689e-3" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Hot borated water -->
@@ -69,7 +69,7 @@
     <nuclide name="O-16" ao="1.0" />
     <nuclide name="B-10" ao="6.490e-4" />
     <nuclide name="B-11" ao="2.689e-3" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- RPV Composition -->
@@ -128,7 +128,7 @@
     <nuclide name="Cr-52" wo="0.145407678031" />
     <nuclide name="Cr-53" wo="0.016806340306" />
     <nuclide name="Cr-54" wo="0.004261520857" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Upper radial reflector / Top plate region -->
@@ -155,7 +155,7 @@
     <nuclide name="Cr-52" wo="0.146766614995" />
     <nuclide name="Cr-53" wo="0.01696340737" />
     <nuclide name="Cr-54" wo="0.004301347765" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom plate region -->
@@ -182,7 +182,7 @@
     <nuclide name="Cr-52" wo="0.157390026871" />
     <nuclide name="Cr-53" wo="0.018191270146" />
     <nuclide name="Cr-54" wo="0.004612692337" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom nozzle region -->
@@ -209,7 +209,7 @@
     <nuclide name="Cr-52" wo="0.124142524198" />
     <nuclide name="Cr-53" wo="0.014348496148" />
     <nuclide name="Cr-54" wo="0.003638294506" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Top nozzle region -->
@@ -236,7 +236,7 @@
     <nuclide name="Cr-52" wo="0.107931450781" />
     <nuclide name="Cr-53" wo="0.012474806806" />
     <nuclide name="Cr-54" wo="0.003163190107" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Top of Fuel Assemblies -->
@@ -251,7 +251,7 @@
     <nuclide name="Zr-92" wo="0.14759527104" />
     <nuclide name="Zr-94" wo="0.15280552077" />
     <nuclide name="Zr-96" wo="0.02511169542" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom of Fuel Assemblies -->
@@ -266,7 +266,7 @@
     <nuclide name="Zr-92" wo="0.1274914944" />
     <nuclide name="Zr-94" wo="0.1319920622" />
     <nuclide name="Zr-96" wo="0.0216912612" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
 </materials>
diff --git a/tests/test_filter_energy/materials.xml b/tests/test_filter_energy/materials.xml
index 845fdf1906..9c0b74f3f1 100644
--- a/tests/test_filter_energy/materials.xml
+++ b/tests/test_filter_energy/materials.xml
@@ -59,7 +59,7 @@
     <nuclide name="O-16" ao="1.0" />
     <nuclide name="B-10" ao="6.490e-4" />
     <nuclide name="B-11" ao="2.689e-3" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Hot borated water -->
@@ -69,7 +69,7 @@
     <nuclide name="O-16" ao="1.0" />
     <nuclide name="B-10" ao="6.490e-4" />
     <nuclide name="B-11" ao="2.689e-3" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- RPV Composition -->
@@ -128,7 +128,7 @@
     <nuclide name="Cr-52" wo="0.145407678031" />
     <nuclide name="Cr-53" wo="0.016806340306" />
     <nuclide name="Cr-54" wo="0.004261520857" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Upper radial reflector / Top plate region -->
@@ -155,7 +155,7 @@
     <nuclide name="Cr-52" wo="0.146766614995" />
     <nuclide name="Cr-53" wo="0.01696340737" />
     <nuclide name="Cr-54" wo="0.004301347765" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom plate region -->
@@ -182,7 +182,7 @@
     <nuclide name="Cr-52" wo="0.157390026871" />
     <nuclide name="Cr-53" wo="0.018191270146" />
     <nuclide name="Cr-54" wo="0.004612692337" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom nozzle region -->
@@ -209,7 +209,7 @@
     <nuclide name="Cr-52" wo="0.124142524198" />
     <nuclide name="Cr-53" wo="0.014348496148" />
     <nuclide name="Cr-54" wo="0.003638294506" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Top nozzle region -->
@@ -236,7 +236,7 @@
     <nuclide name="Cr-52" wo="0.107931450781" />
     <nuclide name="Cr-53" wo="0.012474806806" />
     <nuclide name="Cr-54" wo="0.003163190107" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Top of Fuel Assemblies -->
@@ -251,7 +251,7 @@
     <nuclide name="Zr-92" wo="0.14759527104" />
     <nuclide name="Zr-94" wo="0.15280552077" />
     <nuclide name="Zr-96" wo="0.02511169542" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom of Fuel Assemblies -->
@@ -266,7 +266,7 @@
     <nuclide name="Zr-92" wo="0.1274914944" />
     <nuclide name="Zr-94" wo="0.1319920622" />
     <nuclide name="Zr-96" wo="0.0216912612" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
 </materials>
diff --git a/tests/test_filter_energyout/materials.xml b/tests/test_filter_energyout/materials.xml
index 845fdf1906..9c0b74f3f1 100644
--- a/tests/test_filter_energyout/materials.xml
+++ b/tests/test_filter_energyout/materials.xml
@@ -59,7 +59,7 @@
     <nuclide name="O-16" ao="1.0" />
     <nuclide name="B-10" ao="6.490e-4" />
     <nuclide name="B-11" ao="2.689e-3" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Hot borated water -->
@@ -69,7 +69,7 @@
     <nuclide name="O-16" ao="1.0" />
     <nuclide name="B-10" ao="6.490e-4" />
     <nuclide name="B-11" ao="2.689e-3" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- RPV Composition -->
@@ -128,7 +128,7 @@
     <nuclide name="Cr-52" wo="0.145407678031" />
     <nuclide name="Cr-53" wo="0.016806340306" />
     <nuclide name="Cr-54" wo="0.004261520857" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Upper radial reflector / Top plate region -->
@@ -155,7 +155,7 @@
     <nuclide name="Cr-52" wo="0.146766614995" />
     <nuclide name="Cr-53" wo="0.01696340737" />
     <nuclide name="Cr-54" wo="0.004301347765" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom plate region -->
@@ -182,7 +182,7 @@
     <nuclide name="Cr-52" wo="0.157390026871" />
     <nuclide name="Cr-53" wo="0.018191270146" />
     <nuclide name="Cr-54" wo="0.004612692337" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom nozzle region -->
@@ -209,7 +209,7 @@
     <nuclide name="Cr-52" wo="0.124142524198" />
     <nuclide name="Cr-53" wo="0.014348496148" />
     <nuclide name="Cr-54" wo="0.003638294506" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Top nozzle region -->
@@ -236,7 +236,7 @@
     <nuclide name="Cr-52" wo="0.107931450781" />
     <nuclide name="Cr-53" wo="0.012474806806" />
     <nuclide name="Cr-54" wo="0.003163190107" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Top of Fuel Assemblies -->
@@ -251,7 +251,7 @@
     <nuclide name="Zr-92" wo="0.14759527104" />
     <nuclide name="Zr-94" wo="0.15280552077" />
     <nuclide name="Zr-96" wo="0.02511169542" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom of Fuel Assemblies -->
@@ -266,7 +266,7 @@
     <nuclide name="Zr-92" wo="0.1274914944" />
     <nuclide name="Zr-94" wo="0.1319920622" />
     <nuclide name="Zr-96" wo="0.0216912612" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
 </materials>
diff --git a/tests/test_filter_group_transfer/materials.xml b/tests/test_filter_group_transfer/materials.xml
index 845fdf1906..9c0b74f3f1 100644
--- a/tests/test_filter_group_transfer/materials.xml
+++ b/tests/test_filter_group_transfer/materials.xml
@@ -59,7 +59,7 @@
     <nuclide name="O-16" ao="1.0" />
     <nuclide name="B-10" ao="6.490e-4" />
     <nuclide name="B-11" ao="2.689e-3" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Hot borated water -->
@@ -69,7 +69,7 @@
     <nuclide name="O-16" ao="1.0" />
     <nuclide name="B-10" ao="6.490e-4" />
     <nuclide name="B-11" ao="2.689e-3" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- RPV Composition -->
@@ -128,7 +128,7 @@
     <nuclide name="Cr-52" wo="0.145407678031" />
     <nuclide name="Cr-53" wo="0.016806340306" />
     <nuclide name="Cr-54" wo="0.004261520857" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Upper radial reflector / Top plate region -->
@@ -155,7 +155,7 @@
     <nuclide name="Cr-52" wo="0.146766614995" />
     <nuclide name="Cr-53" wo="0.01696340737" />
     <nuclide name="Cr-54" wo="0.004301347765" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom plate region -->
@@ -182,7 +182,7 @@
     <nuclide name="Cr-52" wo="0.157390026871" />
     <nuclide name="Cr-53" wo="0.018191270146" />
     <nuclide name="Cr-54" wo="0.004612692337" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom nozzle region -->
@@ -209,7 +209,7 @@
     <nuclide name="Cr-52" wo="0.124142524198" />
     <nuclide name="Cr-53" wo="0.014348496148" />
     <nuclide name="Cr-54" wo="0.003638294506" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Top nozzle region -->
@@ -236,7 +236,7 @@
     <nuclide name="Cr-52" wo="0.107931450781" />
     <nuclide name="Cr-53" wo="0.012474806806" />
     <nuclide name="Cr-54" wo="0.003163190107" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Top of Fuel Assemblies -->
@@ -251,7 +251,7 @@
     <nuclide name="Zr-92" wo="0.14759527104" />
     <nuclide name="Zr-94" wo="0.15280552077" />
     <nuclide name="Zr-96" wo="0.02511169542" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom of Fuel Assemblies -->
@@ -266,7 +266,7 @@
     <nuclide name="Zr-92" wo="0.1274914944" />
     <nuclide name="Zr-94" wo="0.1319920622" />
     <nuclide name="Zr-96" wo="0.0216912612" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
 </materials>
diff --git a/tests/test_filter_material/materials.xml b/tests/test_filter_material/materials.xml
index 845fdf1906..9c0b74f3f1 100644
--- a/tests/test_filter_material/materials.xml
+++ b/tests/test_filter_material/materials.xml
@@ -59,7 +59,7 @@
     <nuclide name="O-16" ao="1.0" />
     <nuclide name="B-10" ao="6.490e-4" />
     <nuclide name="B-11" ao="2.689e-3" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Hot borated water -->
@@ -69,7 +69,7 @@
     <nuclide name="O-16" ao="1.0" />
     <nuclide name="B-10" ao="6.490e-4" />
     <nuclide name="B-11" ao="2.689e-3" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- RPV Composition -->
@@ -128,7 +128,7 @@
     <nuclide name="Cr-52" wo="0.145407678031" />
     <nuclide name="Cr-53" wo="0.016806340306" />
     <nuclide name="Cr-54" wo="0.004261520857" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Upper radial reflector / Top plate region -->
@@ -155,7 +155,7 @@
     <nuclide name="Cr-52" wo="0.146766614995" />
     <nuclide name="Cr-53" wo="0.01696340737" />
     <nuclide name="Cr-54" wo="0.004301347765" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom plate region -->
@@ -182,7 +182,7 @@
     <nuclide name="Cr-52" wo="0.157390026871" />
     <nuclide name="Cr-53" wo="0.018191270146" />
     <nuclide name="Cr-54" wo="0.004612692337" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom nozzle region -->
@@ -209,7 +209,7 @@
     <nuclide name="Cr-52" wo="0.124142524198" />
     <nuclide name="Cr-53" wo="0.014348496148" />
     <nuclide name="Cr-54" wo="0.003638294506" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Top nozzle region -->
@@ -236,7 +236,7 @@
     <nuclide name="Cr-52" wo="0.107931450781" />
     <nuclide name="Cr-53" wo="0.012474806806" />
     <nuclide name="Cr-54" wo="0.003163190107" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Top of Fuel Assemblies -->
@@ -251,7 +251,7 @@
     <nuclide name="Zr-92" wo="0.14759527104" />
     <nuclide name="Zr-94" wo="0.15280552077" />
     <nuclide name="Zr-96" wo="0.02511169542" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom of Fuel Assemblies -->
@@ -266,7 +266,7 @@
     <nuclide name="Zr-92" wo="0.1274914944" />
     <nuclide name="Zr-94" wo="0.1319920622" />
     <nuclide name="Zr-96" wo="0.0216912612" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
 </materials>
diff --git a/tests/test_filter_mesh_2d/materials.xml b/tests/test_filter_mesh_2d/materials.xml
index 845fdf1906..9c0b74f3f1 100644
--- a/tests/test_filter_mesh_2d/materials.xml
+++ b/tests/test_filter_mesh_2d/materials.xml
@@ -59,7 +59,7 @@
     <nuclide name="O-16" ao="1.0" />
     <nuclide name="B-10" ao="6.490e-4" />
     <nuclide name="B-11" ao="2.689e-3" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Hot borated water -->
@@ -69,7 +69,7 @@
     <nuclide name="O-16" ao="1.0" />
     <nuclide name="B-10" ao="6.490e-4" />
     <nuclide name="B-11" ao="2.689e-3" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- RPV Composition -->
@@ -128,7 +128,7 @@
     <nuclide name="Cr-52" wo="0.145407678031" />
     <nuclide name="Cr-53" wo="0.016806340306" />
     <nuclide name="Cr-54" wo="0.004261520857" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Upper radial reflector / Top plate region -->
@@ -155,7 +155,7 @@
     <nuclide name="Cr-52" wo="0.146766614995" />
     <nuclide name="Cr-53" wo="0.01696340737" />
     <nuclide name="Cr-54" wo="0.004301347765" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom plate region -->
@@ -182,7 +182,7 @@
     <nuclide name="Cr-52" wo="0.157390026871" />
     <nuclide name="Cr-53" wo="0.018191270146" />
     <nuclide name="Cr-54" wo="0.004612692337" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom nozzle region -->
@@ -209,7 +209,7 @@
     <nuclide name="Cr-52" wo="0.124142524198" />
     <nuclide name="Cr-53" wo="0.014348496148" />
     <nuclide name="Cr-54" wo="0.003638294506" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Top nozzle region -->
@@ -236,7 +236,7 @@
     <nuclide name="Cr-52" wo="0.107931450781" />
     <nuclide name="Cr-53" wo="0.012474806806" />
     <nuclide name="Cr-54" wo="0.003163190107" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Top of Fuel Assemblies -->
@@ -251,7 +251,7 @@
     <nuclide name="Zr-92" wo="0.14759527104" />
     <nuclide name="Zr-94" wo="0.15280552077" />
     <nuclide name="Zr-96" wo="0.02511169542" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom of Fuel Assemblies -->
@@ -266,7 +266,7 @@
     <nuclide name="Zr-92" wo="0.1274914944" />
     <nuclide name="Zr-94" wo="0.1319920622" />
     <nuclide name="Zr-96" wo="0.0216912612" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
 </materials>
diff --git a/tests/test_filter_mesh_3d/materials.xml b/tests/test_filter_mesh_3d/materials.xml
index 845fdf1906..9c0b74f3f1 100644
--- a/tests/test_filter_mesh_3d/materials.xml
+++ b/tests/test_filter_mesh_3d/materials.xml
@@ -59,7 +59,7 @@
     <nuclide name="O-16" ao="1.0" />
     <nuclide name="B-10" ao="6.490e-4" />
     <nuclide name="B-11" ao="2.689e-3" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Hot borated water -->
@@ -69,7 +69,7 @@
     <nuclide name="O-16" ao="1.0" />
     <nuclide name="B-10" ao="6.490e-4" />
     <nuclide name="B-11" ao="2.689e-3" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- RPV Composition -->
@@ -128,7 +128,7 @@
     <nuclide name="Cr-52" wo="0.145407678031" />
     <nuclide name="Cr-53" wo="0.016806340306" />
     <nuclide name="Cr-54" wo="0.004261520857" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Upper radial reflector / Top plate region -->
@@ -155,7 +155,7 @@
     <nuclide name="Cr-52" wo="0.146766614995" />
     <nuclide name="Cr-53" wo="0.01696340737" />
     <nuclide name="Cr-54" wo="0.004301347765" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom plate region -->
@@ -182,7 +182,7 @@
     <nuclide name="Cr-52" wo="0.157390026871" />
     <nuclide name="Cr-53" wo="0.018191270146" />
     <nuclide name="Cr-54" wo="0.004612692337" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom nozzle region -->
@@ -209,7 +209,7 @@
     <nuclide name="Cr-52" wo="0.124142524198" />
     <nuclide name="Cr-53" wo="0.014348496148" />
     <nuclide name="Cr-54" wo="0.003638294506" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Top nozzle region -->
@@ -236,7 +236,7 @@
     <nuclide name="Cr-52" wo="0.107931450781" />
     <nuclide name="Cr-53" wo="0.012474806806" />
     <nuclide name="Cr-54" wo="0.003163190107" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Top of Fuel Assemblies -->
@@ -251,7 +251,7 @@
     <nuclide name="Zr-92" wo="0.14759527104" />
     <nuclide name="Zr-94" wo="0.15280552077" />
     <nuclide name="Zr-96" wo="0.02511169542" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom of Fuel Assemblies -->
@@ -266,7 +266,7 @@
     <nuclide name="Zr-92" wo="0.1274914944" />
     <nuclide name="Zr-94" wo="0.1319920622" />
     <nuclide name="Zr-96" wo="0.0216912612" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
 </materials>
diff --git a/tests/test_filter_universe/materials.xml b/tests/test_filter_universe/materials.xml
index 845fdf1906..9c0b74f3f1 100644
--- a/tests/test_filter_universe/materials.xml
+++ b/tests/test_filter_universe/materials.xml
@@ -59,7 +59,7 @@
     <nuclide name="O-16" ao="1.0" />
     <nuclide name="B-10" ao="6.490e-4" />
     <nuclide name="B-11" ao="2.689e-3" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Hot borated water -->
@@ -69,7 +69,7 @@
     <nuclide name="O-16" ao="1.0" />
     <nuclide name="B-10" ao="6.490e-4" />
     <nuclide name="B-11" ao="2.689e-3" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- RPV Composition -->
@@ -128,7 +128,7 @@
     <nuclide name="Cr-52" wo="0.145407678031" />
     <nuclide name="Cr-53" wo="0.016806340306" />
     <nuclide name="Cr-54" wo="0.004261520857" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Upper radial reflector / Top plate region -->
@@ -155,7 +155,7 @@
     <nuclide name="Cr-52" wo="0.146766614995" />
     <nuclide name="Cr-53" wo="0.01696340737" />
     <nuclide name="Cr-54" wo="0.004301347765" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom plate region -->
@@ -182,7 +182,7 @@
     <nuclide name="Cr-52" wo="0.157390026871" />
     <nuclide name="Cr-53" wo="0.018191270146" />
     <nuclide name="Cr-54" wo="0.004612692337" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom nozzle region -->
@@ -209,7 +209,7 @@
     <nuclide name="Cr-52" wo="0.124142524198" />
     <nuclide name="Cr-53" wo="0.014348496148" />
     <nuclide name="Cr-54" wo="0.003638294506" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Top nozzle region -->
@@ -236,7 +236,7 @@
     <nuclide name="Cr-52" wo="0.107931450781" />
     <nuclide name="Cr-53" wo="0.012474806806" />
     <nuclide name="Cr-54" wo="0.003163190107" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Top of Fuel Assemblies -->
@@ -251,7 +251,7 @@
     <nuclide name="Zr-92" wo="0.14759527104" />
     <nuclide name="Zr-94" wo="0.15280552077" />
     <nuclide name="Zr-96" wo="0.02511169542" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom of Fuel Assemblies -->
@@ -266,7 +266,7 @@
     <nuclide name="Zr-92" wo="0.1274914944" />
     <nuclide name="Zr-94" wo="0.1319920622" />
     <nuclide name="Zr-96" wo="0.0216912612" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
 </materials>
diff --git a/tests/test_lattice/materials.xml b/tests/test_lattice/materials.xml
index 97c60eaadd..ec229e17f4 100644
--- a/tests/test_lattice/materials.xml
+++ b/tests/test_lattice/materials.xml
@@ -88,7 +88,7 @@
     <!-- Boron at 1.7 ppm -->
     <nuclide name="B-10" ao="1.8706e-08" />
     <nuclide name="B-11" ao="7.5770e-08" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
     
   <!-- 6061 Aluminum -->
diff --git a/tests/test_lattice_multiple/materials.xml b/tests/test_lattice_multiple/materials.xml
index 845fdf1906..9c0b74f3f1 100644
--- a/tests/test_lattice_multiple/materials.xml
+++ b/tests/test_lattice_multiple/materials.xml
@@ -59,7 +59,7 @@
     <nuclide name="O-16" ao="1.0" />
     <nuclide name="B-10" ao="6.490e-4" />
     <nuclide name="B-11" ao="2.689e-3" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Hot borated water -->
@@ -69,7 +69,7 @@
     <nuclide name="O-16" ao="1.0" />
     <nuclide name="B-10" ao="6.490e-4" />
     <nuclide name="B-11" ao="2.689e-3" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- RPV Composition -->
@@ -128,7 +128,7 @@
     <nuclide name="Cr-52" wo="0.145407678031" />
     <nuclide name="Cr-53" wo="0.016806340306" />
     <nuclide name="Cr-54" wo="0.004261520857" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Upper radial reflector / Top plate region -->
@@ -155,7 +155,7 @@
     <nuclide name="Cr-52" wo="0.146766614995" />
     <nuclide name="Cr-53" wo="0.01696340737" />
     <nuclide name="Cr-54" wo="0.004301347765" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom plate region -->
@@ -182,7 +182,7 @@
     <nuclide name="Cr-52" wo="0.157390026871" />
     <nuclide name="Cr-53" wo="0.018191270146" />
     <nuclide name="Cr-54" wo="0.004612692337" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom nozzle region -->
@@ -209,7 +209,7 @@
     <nuclide name="Cr-52" wo="0.124142524198" />
     <nuclide name="Cr-53" wo="0.014348496148" />
     <nuclide name="Cr-54" wo="0.003638294506" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Top nozzle region -->
@@ -236,7 +236,7 @@
     <nuclide name="Cr-52" wo="0.107931450781" />
     <nuclide name="Cr-53" wo="0.012474806806" />
     <nuclide name="Cr-54" wo="0.003163190107" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Top of Fuel Assemblies -->
@@ -251,7 +251,7 @@
     <nuclide name="Zr-92" wo="0.14759527104" />
     <nuclide name="Zr-94" wo="0.15280552077" />
     <nuclide name="Zr-96" wo="0.02511169542" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom of Fuel Assemblies -->
@@ -266,7 +266,7 @@
     <nuclide name="Zr-92" wo="0.1274914944" />
     <nuclide name="Zr-94" wo="0.1319920622" />
     <nuclide name="Zr-96" wo="0.0216912612" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
 </materials>
diff --git a/tests/test_salphabeta/materials.xml b/tests/test_salphabeta/materials.xml
index a39e4c9384..f17f2732a7 100644
--- a/tests/test_salphabeta/materials.xml
+++ b/tests/test_salphabeta/materials.xml
@@ -7,14 +7,14 @@
     <density value="4.5" units="g/cc" />
     <nuclide name="U-235" ao="1.0" />
     <nuclide name="H-1" ao="1.0" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <material id="2">
     <density value="4.5" units="g/cc" />
     <nuclide name="U-235" ao="1.0" />
     <nuclide name="C-Nat" ao="1.0" />
-    <sab name="grph" xs="10t" />
+    <sab name="grph" xs="71t" />
   </material>
 
   <material id="3">
@@ -22,7 +22,7 @@
     <nuclide name="U-235" ao="1.0" />
     <nuclide name="Be-9" ao="1.0" />
     <nuclide name="O-16" ao="1.0" />
-    <sab name="be/o" xs="10t" />
+    <sab name="be/o" xs="71t" />
   </material>
 
 </materials>
diff --git a/tests/test_salphabeta_multiple/materials.xml b/tests/test_salphabeta_multiple/materials.xml
index 3df213aae1..f09b7c8fcf 100644
--- a/tests/test_salphabeta_multiple/materials.xml
+++ b/tests/test_salphabeta_multiple/materials.xml
@@ -28,8 +28,8 @@
     <!-- O at 6.9041e-2 -->
     <nuclide name="O-16" ao="6.9015e-02" />
     <nuclide name="O-17" ao="2.6236e-05" />
-    <sab name="be/o" xs="10t" />
-    <sab name="o/be" xs="10t" />
+    <sab name="be/o" xs="71t" />
+    <sab name="o/be" xs="71t" />
   </material>
 
   <!-- Steel Cover -->
@@ -123,8 +123,8 @@
     <nuclide name="Zr-96"  ao="0.05" />
     <nuclide name="U-235"  ao="0.1" />
     <nuclide name="U-238"  ao="0.15" />
-    <sab name="h/zr" xs="10t" />
-    <sab name="zr/h" xs="10t" />
+    <sab name="h/zr" xs="71t" />
+    <sab name="zr/h" xs="71t" />
   </material>
 
 </materials>
diff --git a/tests/test_score_MT/materials.xml b/tests/test_score_MT/materials.xml
index 845fdf1906..9c0b74f3f1 100644
--- a/tests/test_score_MT/materials.xml
+++ b/tests/test_score_MT/materials.xml
@@ -59,7 +59,7 @@
     <nuclide name="O-16" ao="1.0" />
     <nuclide name="B-10" ao="6.490e-4" />
     <nuclide name="B-11" ao="2.689e-3" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Hot borated water -->
@@ -69,7 +69,7 @@
     <nuclide name="O-16" ao="1.0" />
     <nuclide name="B-10" ao="6.490e-4" />
     <nuclide name="B-11" ao="2.689e-3" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- RPV Composition -->
@@ -128,7 +128,7 @@
     <nuclide name="Cr-52" wo="0.145407678031" />
     <nuclide name="Cr-53" wo="0.016806340306" />
     <nuclide name="Cr-54" wo="0.004261520857" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Upper radial reflector / Top plate region -->
@@ -155,7 +155,7 @@
     <nuclide name="Cr-52" wo="0.146766614995" />
     <nuclide name="Cr-53" wo="0.01696340737" />
     <nuclide name="Cr-54" wo="0.004301347765" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom plate region -->
@@ -182,7 +182,7 @@
     <nuclide name="Cr-52" wo="0.157390026871" />
     <nuclide name="Cr-53" wo="0.018191270146" />
     <nuclide name="Cr-54" wo="0.004612692337" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom nozzle region -->
@@ -209,7 +209,7 @@
     <nuclide name="Cr-52" wo="0.124142524198" />
     <nuclide name="Cr-53" wo="0.014348496148" />
     <nuclide name="Cr-54" wo="0.003638294506" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Top nozzle region -->
@@ -236,7 +236,7 @@
     <nuclide name="Cr-52" wo="0.107931450781" />
     <nuclide name="Cr-53" wo="0.012474806806" />
     <nuclide name="Cr-54" wo="0.003163190107" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Top of Fuel Assemblies -->
@@ -251,7 +251,7 @@
     <nuclide name="Zr-92" wo="0.14759527104" />
     <nuclide name="Zr-94" wo="0.15280552077" />
     <nuclide name="Zr-96" wo="0.02511169542" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom of Fuel Assemblies -->
@@ -266,7 +266,7 @@
     <nuclide name="Zr-92" wo="0.1274914944" />
     <nuclide name="Zr-94" wo="0.1319920622" />
     <nuclide name="Zr-96" wo="0.0216912612" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
 </materials>
diff --git a/tests/test_score_absorption/materials.xml b/tests/test_score_absorption/materials.xml
index 845fdf1906..9c0b74f3f1 100644
--- a/tests/test_score_absorption/materials.xml
+++ b/tests/test_score_absorption/materials.xml
@@ -59,7 +59,7 @@
     <nuclide name="O-16" ao="1.0" />
     <nuclide name="B-10" ao="6.490e-4" />
     <nuclide name="B-11" ao="2.689e-3" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Hot borated water -->
@@ -69,7 +69,7 @@
     <nuclide name="O-16" ao="1.0" />
     <nuclide name="B-10" ao="6.490e-4" />
     <nuclide name="B-11" ao="2.689e-3" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- RPV Composition -->
@@ -128,7 +128,7 @@
     <nuclide name="Cr-52" wo="0.145407678031" />
     <nuclide name="Cr-53" wo="0.016806340306" />
     <nuclide name="Cr-54" wo="0.004261520857" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Upper radial reflector / Top plate region -->
@@ -155,7 +155,7 @@
     <nuclide name="Cr-52" wo="0.146766614995" />
     <nuclide name="Cr-53" wo="0.01696340737" />
     <nuclide name="Cr-54" wo="0.004301347765" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom plate region -->
@@ -182,7 +182,7 @@
     <nuclide name="Cr-52" wo="0.157390026871" />
     <nuclide name="Cr-53" wo="0.018191270146" />
     <nuclide name="Cr-54" wo="0.004612692337" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom nozzle region -->
@@ -209,7 +209,7 @@
     <nuclide name="Cr-52" wo="0.124142524198" />
     <nuclide name="Cr-53" wo="0.014348496148" />
     <nuclide name="Cr-54" wo="0.003638294506" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Top nozzle region -->
@@ -236,7 +236,7 @@
     <nuclide name="Cr-52" wo="0.107931450781" />
     <nuclide name="Cr-53" wo="0.012474806806" />
     <nuclide name="Cr-54" wo="0.003163190107" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Top of Fuel Assemblies -->
@@ -251,7 +251,7 @@
     <nuclide name="Zr-92" wo="0.14759527104" />
     <nuclide name="Zr-94" wo="0.15280552077" />
     <nuclide name="Zr-96" wo="0.02511169542" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom of Fuel Assemblies -->
@@ -266,7 +266,7 @@
     <nuclide name="Zr-92" wo="0.1274914944" />
     <nuclide name="Zr-94" wo="0.1319920622" />
     <nuclide name="Zr-96" wo="0.0216912612" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
 </materials>
diff --git a/tests/test_score_current/materials.xml b/tests/test_score_current/materials.xml
index 845fdf1906..9c0b74f3f1 100644
--- a/tests/test_score_current/materials.xml
+++ b/tests/test_score_current/materials.xml
@@ -59,7 +59,7 @@
     <nuclide name="O-16" ao="1.0" />
     <nuclide name="B-10" ao="6.490e-4" />
     <nuclide name="B-11" ao="2.689e-3" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Hot borated water -->
@@ -69,7 +69,7 @@
     <nuclide name="O-16" ao="1.0" />
     <nuclide name="B-10" ao="6.490e-4" />
     <nuclide name="B-11" ao="2.689e-3" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- RPV Composition -->
@@ -128,7 +128,7 @@
     <nuclide name="Cr-52" wo="0.145407678031" />
     <nuclide name="Cr-53" wo="0.016806340306" />
     <nuclide name="Cr-54" wo="0.004261520857" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Upper radial reflector / Top plate region -->
@@ -155,7 +155,7 @@
     <nuclide name="Cr-52" wo="0.146766614995" />
     <nuclide name="Cr-53" wo="0.01696340737" />
     <nuclide name="Cr-54" wo="0.004301347765" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom plate region -->
@@ -182,7 +182,7 @@
     <nuclide name="Cr-52" wo="0.157390026871" />
     <nuclide name="Cr-53" wo="0.018191270146" />
     <nuclide name="Cr-54" wo="0.004612692337" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom nozzle region -->
@@ -209,7 +209,7 @@
     <nuclide name="Cr-52" wo="0.124142524198" />
     <nuclide name="Cr-53" wo="0.014348496148" />
     <nuclide name="Cr-54" wo="0.003638294506" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Top nozzle region -->
@@ -236,7 +236,7 @@
     <nuclide name="Cr-52" wo="0.107931450781" />
     <nuclide name="Cr-53" wo="0.012474806806" />
     <nuclide name="Cr-54" wo="0.003163190107" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Top of Fuel Assemblies -->
@@ -251,7 +251,7 @@
     <nuclide name="Zr-92" wo="0.14759527104" />
     <nuclide name="Zr-94" wo="0.15280552077" />
     <nuclide name="Zr-96" wo="0.02511169542" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom of Fuel Assemblies -->
@@ -266,7 +266,7 @@
     <nuclide name="Zr-92" wo="0.1274914944" />
     <nuclide name="Zr-94" wo="0.1319920622" />
     <nuclide name="Zr-96" wo="0.0216912612" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
 </materials>
diff --git a/tests/test_score_events/materials.xml b/tests/test_score_events/materials.xml
index 845fdf1906..9c0b74f3f1 100644
--- a/tests/test_score_events/materials.xml
+++ b/tests/test_score_events/materials.xml
@@ -59,7 +59,7 @@
     <nuclide name="O-16" ao="1.0" />
     <nuclide name="B-10" ao="6.490e-4" />
     <nuclide name="B-11" ao="2.689e-3" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Hot borated water -->
@@ -69,7 +69,7 @@
     <nuclide name="O-16" ao="1.0" />
     <nuclide name="B-10" ao="6.490e-4" />
     <nuclide name="B-11" ao="2.689e-3" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- RPV Composition -->
@@ -128,7 +128,7 @@
     <nuclide name="Cr-52" wo="0.145407678031" />
     <nuclide name="Cr-53" wo="0.016806340306" />
     <nuclide name="Cr-54" wo="0.004261520857" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Upper radial reflector / Top plate region -->
@@ -155,7 +155,7 @@
     <nuclide name="Cr-52" wo="0.146766614995" />
     <nuclide name="Cr-53" wo="0.01696340737" />
     <nuclide name="Cr-54" wo="0.004301347765" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom plate region -->
@@ -182,7 +182,7 @@
     <nuclide name="Cr-52" wo="0.157390026871" />
     <nuclide name="Cr-53" wo="0.018191270146" />
     <nuclide name="Cr-54" wo="0.004612692337" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom nozzle region -->
@@ -209,7 +209,7 @@
     <nuclide name="Cr-52" wo="0.124142524198" />
     <nuclide name="Cr-53" wo="0.014348496148" />
     <nuclide name="Cr-54" wo="0.003638294506" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Top nozzle region -->
@@ -236,7 +236,7 @@
     <nuclide name="Cr-52" wo="0.107931450781" />
     <nuclide name="Cr-53" wo="0.012474806806" />
     <nuclide name="Cr-54" wo="0.003163190107" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Top of Fuel Assemblies -->
@@ -251,7 +251,7 @@
     <nuclide name="Zr-92" wo="0.14759527104" />
     <nuclide name="Zr-94" wo="0.15280552077" />
     <nuclide name="Zr-96" wo="0.02511169542" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom of Fuel Assemblies -->
@@ -266,7 +266,7 @@
     <nuclide name="Zr-92" wo="0.1274914944" />
     <nuclide name="Zr-94" wo="0.1319920622" />
     <nuclide name="Zr-96" wo="0.0216912612" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
 </materials>
diff --git a/tests/test_score_fission/materials.xml b/tests/test_score_fission/materials.xml
index 845fdf1906..9c0b74f3f1 100644
--- a/tests/test_score_fission/materials.xml
+++ b/tests/test_score_fission/materials.xml
@@ -59,7 +59,7 @@
     <nuclide name="O-16" ao="1.0" />
     <nuclide name="B-10" ao="6.490e-4" />
     <nuclide name="B-11" ao="2.689e-3" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Hot borated water -->
@@ -69,7 +69,7 @@
     <nuclide name="O-16" ao="1.0" />
     <nuclide name="B-10" ao="6.490e-4" />
     <nuclide name="B-11" ao="2.689e-3" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- RPV Composition -->
@@ -128,7 +128,7 @@
     <nuclide name="Cr-52" wo="0.145407678031" />
     <nuclide name="Cr-53" wo="0.016806340306" />
     <nuclide name="Cr-54" wo="0.004261520857" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Upper radial reflector / Top plate region -->
@@ -155,7 +155,7 @@
     <nuclide name="Cr-52" wo="0.146766614995" />
     <nuclide name="Cr-53" wo="0.01696340737" />
     <nuclide name="Cr-54" wo="0.004301347765" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom plate region -->
@@ -182,7 +182,7 @@
     <nuclide name="Cr-52" wo="0.157390026871" />
     <nuclide name="Cr-53" wo="0.018191270146" />
     <nuclide name="Cr-54" wo="0.004612692337" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom nozzle region -->
@@ -209,7 +209,7 @@
     <nuclide name="Cr-52" wo="0.124142524198" />
     <nuclide name="Cr-53" wo="0.014348496148" />
     <nuclide name="Cr-54" wo="0.003638294506" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Top nozzle region -->
@@ -236,7 +236,7 @@
     <nuclide name="Cr-52" wo="0.107931450781" />
     <nuclide name="Cr-53" wo="0.012474806806" />
     <nuclide name="Cr-54" wo="0.003163190107" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Top of Fuel Assemblies -->
@@ -251,7 +251,7 @@
     <nuclide name="Zr-92" wo="0.14759527104" />
     <nuclide name="Zr-94" wo="0.15280552077" />
     <nuclide name="Zr-96" wo="0.02511169542" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom of Fuel Assemblies -->
@@ -266,7 +266,7 @@
     <nuclide name="Zr-92" wo="0.1274914944" />
     <nuclide name="Zr-94" wo="0.1319920622" />
     <nuclide name="Zr-96" wo="0.0216912612" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
 </materials>
diff --git a/tests/test_score_flux/materials.xml b/tests/test_score_flux/materials.xml
index 845fdf1906..9c0b74f3f1 100644
--- a/tests/test_score_flux/materials.xml
+++ b/tests/test_score_flux/materials.xml
@@ -59,7 +59,7 @@
     <nuclide name="O-16" ao="1.0" />
     <nuclide name="B-10" ao="6.490e-4" />
     <nuclide name="B-11" ao="2.689e-3" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Hot borated water -->
@@ -69,7 +69,7 @@
     <nuclide name="O-16" ao="1.0" />
     <nuclide name="B-10" ao="6.490e-4" />
     <nuclide name="B-11" ao="2.689e-3" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- RPV Composition -->
@@ -128,7 +128,7 @@
     <nuclide name="Cr-52" wo="0.145407678031" />
     <nuclide name="Cr-53" wo="0.016806340306" />
     <nuclide name="Cr-54" wo="0.004261520857" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Upper radial reflector / Top plate region -->
@@ -155,7 +155,7 @@
     <nuclide name="Cr-52" wo="0.146766614995" />
     <nuclide name="Cr-53" wo="0.01696340737" />
     <nuclide name="Cr-54" wo="0.004301347765" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom plate region -->
@@ -182,7 +182,7 @@
     <nuclide name="Cr-52" wo="0.157390026871" />
     <nuclide name="Cr-53" wo="0.018191270146" />
     <nuclide name="Cr-54" wo="0.004612692337" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom nozzle region -->
@@ -209,7 +209,7 @@
     <nuclide name="Cr-52" wo="0.124142524198" />
     <nuclide name="Cr-53" wo="0.014348496148" />
     <nuclide name="Cr-54" wo="0.003638294506" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Top nozzle region -->
@@ -236,7 +236,7 @@
     <nuclide name="Cr-52" wo="0.107931450781" />
     <nuclide name="Cr-53" wo="0.012474806806" />
     <nuclide name="Cr-54" wo="0.003163190107" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Top of Fuel Assemblies -->
@@ -251,7 +251,7 @@
     <nuclide name="Zr-92" wo="0.14759527104" />
     <nuclide name="Zr-94" wo="0.15280552077" />
     <nuclide name="Zr-96" wo="0.02511169542" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom of Fuel Assemblies -->
@@ -266,7 +266,7 @@
     <nuclide name="Zr-92" wo="0.1274914944" />
     <nuclide name="Zr-94" wo="0.1319920622" />
     <nuclide name="Zr-96" wo="0.0216912612" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
 </materials>
diff --git a/tests/test_score_kappafission/materials.xml b/tests/test_score_kappafission/materials.xml
index 845fdf1906..9c0b74f3f1 100644
--- a/tests/test_score_kappafission/materials.xml
+++ b/tests/test_score_kappafission/materials.xml
@@ -59,7 +59,7 @@
     <nuclide name="O-16" ao="1.0" />
     <nuclide name="B-10" ao="6.490e-4" />
     <nuclide name="B-11" ao="2.689e-3" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Hot borated water -->
@@ -69,7 +69,7 @@
     <nuclide name="O-16" ao="1.0" />
     <nuclide name="B-10" ao="6.490e-4" />
     <nuclide name="B-11" ao="2.689e-3" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- RPV Composition -->
@@ -128,7 +128,7 @@
     <nuclide name="Cr-52" wo="0.145407678031" />
     <nuclide name="Cr-53" wo="0.016806340306" />
     <nuclide name="Cr-54" wo="0.004261520857" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Upper radial reflector / Top plate region -->
@@ -155,7 +155,7 @@
     <nuclide name="Cr-52" wo="0.146766614995" />
     <nuclide name="Cr-53" wo="0.01696340737" />
     <nuclide name="Cr-54" wo="0.004301347765" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom plate region -->
@@ -182,7 +182,7 @@
     <nuclide name="Cr-52" wo="0.157390026871" />
     <nuclide name="Cr-53" wo="0.018191270146" />
     <nuclide name="Cr-54" wo="0.004612692337" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom nozzle region -->
@@ -209,7 +209,7 @@
     <nuclide name="Cr-52" wo="0.124142524198" />
     <nuclide name="Cr-53" wo="0.014348496148" />
     <nuclide name="Cr-54" wo="0.003638294506" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Top nozzle region -->
@@ -236,7 +236,7 @@
     <nuclide name="Cr-52" wo="0.107931450781" />
     <nuclide name="Cr-53" wo="0.012474806806" />
     <nuclide name="Cr-54" wo="0.003163190107" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Top of Fuel Assemblies -->
@@ -251,7 +251,7 @@
     <nuclide name="Zr-92" wo="0.14759527104" />
     <nuclide name="Zr-94" wo="0.15280552077" />
     <nuclide name="Zr-96" wo="0.02511169542" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom of Fuel Assemblies -->
@@ -266,7 +266,7 @@
     <nuclide name="Zr-92" wo="0.1274914944" />
     <nuclide name="Zr-94" wo="0.1319920622" />
     <nuclide name="Zr-96" wo="0.0216912612" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
 </materials>
diff --git a/tests/test_score_nufission/materials.xml b/tests/test_score_nufission/materials.xml
index 845fdf1906..9c0b74f3f1 100644
--- a/tests/test_score_nufission/materials.xml
+++ b/tests/test_score_nufission/materials.xml
@@ -59,7 +59,7 @@
     <nuclide name="O-16" ao="1.0" />
     <nuclide name="B-10" ao="6.490e-4" />
     <nuclide name="B-11" ao="2.689e-3" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Hot borated water -->
@@ -69,7 +69,7 @@
     <nuclide name="O-16" ao="1.0" />
     <nuclide name="B-10" ao="6.490e-4" />
     <nuclide name="B-11" ao="2.689e-3" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- RPV Composition -->
@@ -128,7 +128,7 @@
     <nuclide name="Cr-52" wo="0.145407678031" />
     <nuclide name="Cr-53" wo="0.016806340306" />
     <nuclide name="Cr-54" wo="0.004261520857" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Upper radial reflector / Top plate region -->
@@ -155,7 +155,7 @@
     <nuclide name="Cr-52" wo="0.146766614995" />
     <nuclide name="Cr-53" wo="0.01696340737" />
     <nuclide name="Cr-54" wo="0.004301347765" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom plate region -->
@@ -182,7 +182,7 @@
     <nuclide name="Cr-52" wo="0.157390026871" />
     <nuclide name="Cr-53" wo="0.018191270146" />
     <nuclide name="Cr-54" wo="0.004612692337" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom nozzle region -->
@@ -209,7 +209,7 @@
     <nuclide name="Cr-52" wo="0.124142524198" />
     <nuclide name="Cr-53" wo="0.014348496148" />
     <nuclide name="Cr-54" wo="0.003638294506" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Top nozzle region -->
@@ -236,7 +236,7 @@
     <nuclide name="Cr-52" wo="0.107931450781" />
     <nuclide name="Cr-53" wo="0.012474806806" />
     <nuclide name="Cr-54" wo="0.003163190107" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Top of Fuel Assemblies -->
@@ -251,7 +251,7 @@
     <nuclide name="Zr-92" wo="0.14759527104" />
     <nuclide name="Zr-94" wo="0.15280552077" />
     <nuclide name="Zr-96" wo="0.02511169542" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom of Fuel Assemblies -->
@@ -266,7 +266,7 @@
     <nuclide name="Zr-92" wo="0.1274914944" />
     <nuclide name="Zr-94" wo="0.1319920622" />
     <nuclide name="Zr-96" wo="0.0216912612" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
 </materials>
diff --git a/tests/test_score_nuscatter/materials.xml b/tests/test_score_nuscatter/materials.xml
index 845fdf1906..9c0b74f3f1 100644
--- a/tests/test_score_nuscatter/materials.xml
+++ b/tests/test_score_nuscatter/materials.xml
@@ -59,7 +59,7 @@
     <nuclide name="O-16" ao="1.0" />
     <nuclide name="B-10" ao="6.490e-4" />
     <nuclide name="B-11" ao="2.689e-3" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Hot borated water -->
@@ -69,7 +69,7 @@
     <nuclide name="O-16" ao="1.0" />
     <nuclide name="B-10" ao="6.490e-4" />
     <nuclide name="B-11" ao="2.689e-3" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- RPV Composition -->
@@ -128,7 +128,7 @@
     <nuclide name="Cr-52" wo="0.145407678031" />
     <nuclide name="Cr-53" wo="0.016806340306" />
     <nuclide name="Cr-54" wo="0.004261520857" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Upper radial reflector / Top plate region -->
@@ -155,7 +155,7 @@
     <nuclide name="Cr-52" wo="0.146766614995" />
     <nuclide name="Cr-53" wo="0.01696340737" />
     <nuclide name="Cr-54" wo="0.004301347765" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom plate region -->
@@ -182,7 +182,7 @@
     <nuclide name="Cr-52" wo="0.157390026871" />
     <nuclide name="Cr-53" wo="0.018191270146" />
     <nuclide name="Cr-54" wo="0.004612692337" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom nozzle region -->
@@ -209,7 +209,7 @@
     <nuclide name="Cr-52" wo="0.124142524198" />
     <nuclide name="Cr-53" wo="0.014348496148" />
     <nuclide name="Cr-54" wo="0.003638294506" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Top nozzle region -->
@@ -236,7 +236,7 @@
     <nuclide name="Cr-52" wo="0.107931450781" />
     <nuclide name="Cr-53" wo="0.012474806806" />
     <nuclide name="Cr-54" wo="0.003163190107" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Top of Fuel Assemblies -->
@@ -251,7 +251,7 @@
     <nuclide name="Zr-92" wo="0.14759527104" />
     <nuclide name="Zr-94" wo="0.15280552077" />
     <nuclide name="Zr-96" wo="0.02511169542" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom of Fuel Assemblies -->
@@ -266,7 +266,7 @@
     <nuclide name="Zr-92" wo="0.1274914944" />
     <nuclide name="Zr-94" wo="0.1319920622" />
     <nuclide name="Zr-96" wo="0.0216912612" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
 </materials>
diff --git a/tests/test_score_scatter/materials.xml b/tests/test_score_scatter/materials.xml
index 845fdf1906..9c0b74f3f1 100644
--- a/tests/test_score_scatter/materials.xml
+++ b/tests/test_score_scatter/materials.xml
@@ -59,7 +59,7 @@
     <nuclide name="O-16" ao="1.0" />
     <nuclide name="B-10" ao="6.490e-4" />
     <nuclide name="B-11" ao="2.689e-3" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Hot borated water -->
@@ -69,7 +69,7 @@
     <nuclide name="O-16" ao="1.0" />
     <nuclide name="B-10" ao="6.490e-4" />
     <nuclide name="B-11" ao="2.689e-3" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- RPV Composition -->
@@ -128,7 +128,7 @@
     <nuclide name="Cr-52" wo="0.145407678031" />
     <nuclide name="Cr-53" wo="0.016806340306" />
     <nuclide name="Cr-54" wo="0.004261520857" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Upper radial reflector / Top plate region -->
@@ -155,7 +155,7 @@
     <nuclide name="Cr-52" wo="0.146766614995" />
     <nuclide name="Cr-53" wo="0.01696340737" />
     <nuclide name="Cr-54" wo="0.004301347765" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom plate region -->
@@ -182,7 +182,7 @@
     <nuclide name="Cr-52" wo="0.157390026871" />
     <nuclide name="Cr-53" wo="0.018191270146" />
     <nuclide name="Cr-54" wo="0.004612692337" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom nozzle region -->
@@ -209,7 +209,7 @@
     <nuclide name="Cr-52" wo="0.124142524198" />
     <nuclide name="Cr-53" wo="0.014348496148" />
     <nuclide name="Cr-54" wo="0.003638294506" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Top nozzle region -->
@@ -236,7 +236,7 @@
     <nuclide name="Cr-52" wo="0.107931450781" />
     <nuclide name="Cr-53" wo="0.012474806806" />
     <nuclide name="Cr-54" wo="0.003163190107" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Top of Fuel Assemblies -->
@@ -251,7 +251,7 @@
     <nuclide name="Zr-92" wo="0.14759527104" />
     <nuclide name="Zr-94" wo="0.15280552077" />
     <nuclide name="Zr-96" wo="0.02511169542" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom of Fuel Assemblies -->
@@ -266,7 +266,7 @@
     <nuclide name="Zr-92" wo="0.1274914944" />
     <nuclide name="Zr-94" wo="0.1319920622" />
     <nuclide name="Zr-96" wo="0.0216912612" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
 </materials>
diff --git a/tests/test_score_scatter_n/materials.xml b/tests/test_score_scatter_n/materials.xml
index 845fdf1906..9c0b74f3f1 100644
--- a/tests/test_score_scatter_n/materials.xml
+++ b/tests/test_score_scatter_n/materials.xml
@@ -59,7 +59,7 @@
     <nuclide name="O-16" ao="1.0" />
     <nuclide name="B-10" ao="6.490e-4" />
     <nuclide name="B-11" ao="2.689e-3" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Hot borated water -->
@@ -69,7 +69,7 @@
     <nuclide name="O-16" ao="1.0" />
     <nuclide name="B-10" ao="6.490e-4" />
     <nuclide name="B-11" ao="2.689e-3" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- RPV Composition -->
@@ -128,7 +128,7 @@
     <nuclide name="Cr-52" wo="0.145407678031" />
     <nuclide name="Cr-53" wo="0.016806340306" />
     <nuclide name="Cr-54" wo="0.004261520857" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Upper radial reflector / Top plate region -->
@@ -155,7 +155,7 @@
     <nuclide name="Cr-52" wo="0.146766614995" />
     <nuclide name="Cr-53" wo="0.01696340737" />
     <nuclide name="Cr-54" wo="0.004301347765" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom plate region -->
@@ -182,7 +182,7 @@
     <nuclide name="Cr-52" wo="0.157390026871" />
     <nuclide name="Cr-53" wo="0.018191270146" />
     <nuclide name="Cr-54" wo="0.004612692337" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom nozzle region -->
@@ -209,7 +209,7 @@
     <nuclide name="Cr-52" wo="0.124142524198" />
     <nuclide name="Cr-53" wo="0.014348496148" />
     <nuclide name="Cr-54" wo="0.003638294506" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Top nozzle region -->
@@ -236,7 +236,7 @@
     <nuclide name="Cr-52" wo="0.107931450781" />
     <nuclide name="Cr-53" wo="0.012474806806" />
     <nuclide name="Cr-54" wo="0.003163190107" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Top of Fuel Assemblies -->
@@ -251,7 +251,7 @@
     <nuclide name="Zr-92" wo="0.14759527104" />
     <nuclide name="Zr-94" wo="0.15280552077" />
     <nuclide name="Zr-96" wo="0.02511169542" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom of Fuel Assemblies -->
@@ -266,7 +266,7 @@
     <nuclide name="Zr-92" wo="0.1274914944" />
     <nuclide name="Zr-94" wo="0.1319920622" />
     <nuclide name="Zr-96" wo="0.0216912612" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
 </materials>
diff --git a/tests/test_score_scatter_pn/materials.xml b/tests/test_score_scatter_pn/materials.xml
index 845fdf1906..9c0b74f3f1 100644
--- a/tests/test_score_scatter_pn/materials.xml
+++ b/tests/test_score_scatter_pn/materials.xml
@@ -59,7 +59,7 @@
     <nuclide name="O-16" ao="1.0" />
     <nuclide name="B-10" ao="6.490e-4" />
     <nuclide name="B-11" ao="2.689e-3" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Hot borated water -->
@@ -69,7 +69,7 @@
     <nuclide name="O-16" ao="1.0" />
     <nuclide name="B-10" ao="6.490e-4" />
     <nuclide name="B-11" ao="2.689e-3" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- RPV Composition -->
@@ -128,7 +128,7 @@
     <nuclide name="Cr-52" wo="0.145407678031" />
     <nuclide name="Cr-53" wo="0.016806340306" />
     <nuclide name="Cr-54" wo="0.004261520857" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Upper radial reflector / Top plate region -->
@@ -155,7 +155,7 @@
     <nuclide name="Cr-52" wo="0.146766614995" />
     <nuclide name="Cr-53" wo="0.01696340737" />
     <nuclide name="Cr-54" wo="0.004301347765" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom plate region -->
@@ -182,7 +182,7 @@
     <nuclide name="Cr-52" wo="0.157390026871" />
     <nuclide name="Cr-53" wo="0.018191270146" />
     <nuclide name="Cr-54" wo="0.004612692337" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom nozzle region -->
@@ -209,7 +209,7 @@
     <nuclide name="Cr-52" wo="0.124142524198" />
     <nuclide name="Cr-53" wo="0.014348496148" />
     <nuclide name="Cr-54" wo="0.003638294506" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Top nozzle region -->
@@ -236,7 +236,7 @@
     <nuclide name="Cr-52" wo="0.107931450781" />
     <nuclide name="Cr-53" wo="0.012474806806" />
     <nuclide name="Cr-54" wo="0.003163190107" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Top of Fuel Assemblies -->
@@ -251,7 +251,7 @@
     <nuclide name="Zr-92" wo="0.14759527104" />
     <nuclide name="Zr-94" wo="0.15280552077" />
     <nuclide name="Zr-96" wo="0.02511169542" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom of Fuel Assemblies -->
@@ -266,7 +266,7 @@
     <nuclide name="Zr-92" wo="0.1274914944" />
     <nuclide name="Zr-94" wo="0.1319920622" />
     <nuclide name="Zr-96" wo="0.0216912612" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
 </materials>
diff --git a/tests/test_score_total/materials.xml b/tests/test_score_total/materials.xml
index 845fdf1906..9c0b74f3f1 100644
--- a/tests/test_score_total/materials.xml
+++ b/tests/test_score_total/materials.xml
@@ -59,7 +59,7 @@
     <nuclide name="O-16" ao="1.0" />
     <nuclide name="B-10" ao="6.490e-4" />
     <nuclide name="B-11" ao="2.689e-3" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Hot borated water -->
@@ -69,7 +69,7 @@
     <nuclide name="O-16" ao="1.0" />
     <nuclide name="B-10" ao="6.490e-4" />
     <nuclide name="B-11" ao="2.689e-3" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- RPV Composition -->
@@ -128,7 +128,7 @@
     <nuclide name="Cr-52" wo="0.145407678031" />
     <nuclide name="Cr-53" wo="0.016806340306" />
     <nuclide name="Cr-54" wo="0.004261520857" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Upper radial reflector / Top plate region -->
@@ -155,7 +155,7 @@
     <nuclide name="Cr-52" wo="0.146766614995" />
     <nuclide name="Cr-53" wo="0.01696340737" />
     <nuclide name="Cr-54" wo="0.004301347765" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom plate region -->
@@ -182,7 +182,7 @@
     <nuclide name="Cr-52" wo="0.157390026871" />
     <nuclide name="Cr-53" wo="0.018191270146" />
     <nuclide name="Cr-54" wo="0.004612692337" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom nozzle region -->
@@ -209,7 +209,7 @@
     <nuclide name="Cr-52" wo="0.124142524198" />
     <nuclide name="Cr-53" wo="0.014348496148" />
     <nuclide name="Cr-54" wo="0.003638294506" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Top nozzle region -->
@@ -236,7 +236,7 @@
     <nuclide name="Cr-52" wo="0.107931450781" />
     <nuclide name="Cr-53" wo="0.012474806806" />
     <nuclide name="Cr-54" wo="0.003163190107" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Top of Fuel Assemblies -->
@@ -251,7 +251,7 @@
     <nuclide name="Zr-92" wo="0.14759527104" />
     <nuclide name="Zr-94" wo="0.15280552077" />
     <nuclide name="Zr-96" wo="0.02511169542" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom of Fuel Assemblies -->
@@ -266,7 +266,7 @@
     <nuclide name="Zr-92" wo="0.1274914944" />
     <nuclide name="Zr-94" wo="0.1319920622" />
     <nuclide name="Zr-96" wo="0.0216912612" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
 </materials>
diff --git a/tests/test_tally_assumesep/materials.xml b/tests/test_tally_assumesep/materials.xml
index 845fdf1906..9c0b74f3f1 100644
--- a/tests/test_tally_assumesep/materials.xml
+++ b/tests/test_tally_assumesep/materials.xml
@@ -59,7 +59,7 @@
     <nuclide name="O-16" ao="1.0" />
     <nuclide name="B-10" ao="6.490e-4" />
     <nuclide name="B-11" ao="2.689e-3" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Hot borated water -->
@@ -69,7 +69,7 @@
     <nuclide name="O-16" ao="1.0" />
     <nuclide name="B-10" ao="6.490e-4" />
     <nuclide name="B-11" ao="2.689e-3" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- RPV Composition -->
@@ -128,7 +128,7 @@
     <nuclide name="Cr-52" wo="0.145407678031" />
     <nuclide name="Cr-53" wo="0.016806340306" />
     <nuclide name="Cr-54" wo="0.004261520857" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Upper radial reflector / Top plate region -->
@@ -155,7 +155,7 @@
     <nuclide name="Cr-52" wo="0.146766614995" />
     <nuclide name="Cr-53" wo="0.01696340737" />
     <nuclide name="Cr-54" wo="0.004301347765" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom plate region -->
@@ -182,7 +182,7 @@
     <nuclide name="Cr-52" wo="0.157390026871" />
     <nuclide name="Cr-53" wo="0.018191270146" />
     <nuclide name="Cr-54" wo="0.004612692337" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom nozzle region -->
@@ -209,7 +209,7 @@
     <nuclide name="Cr-52" wo="0.124142524198" />
     <nuclide name="Cr-53" wo="0.014348496148" />
     <nuclide name="Cr-54" wo="0.003638294506" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Top nozzle region -->
@@ -236,7 +236,7 @@
     <nuclide name="Cr-52" wo="0.107931450781" />
     <nuclide name="Cr-53" wo="0.012474806806" />
     <nuclide name="Cr-54" wo="0.003163190107" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Top of Fuel Assemblies -->
@@ -251,7 +251,7 @@
     <nuclide name="Zr-92" wo="0.14759527104" />
     <nuclide name="Zr-94" wo="0.15280552077" />
     <nuclide name="Zr-96" wo="0.02511169542" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
   <!-- Bottom of Fuel Assemblies -->
@@ -266,7 +266,7 @@
     <nuclide name="Zr-92" wo="0.1274914944" />
     <nuclide name="Zr-94" wo="0.1319920622" />
     <nuclide name="Zr-96" wo="0.0216912612" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
 </materials>
diff --git a/tests/test_track_output/materials.xml b/tests/test_track_output/materials.xml
index 6c17607b6e..e2b96cb534 100644
--- a/tests/test_track_output/materials.xml
+++ b/tests/test_track_output/materials.xml
@@ -8,7 +8,7 @@
     <nuclide name="O-16" xs="71c" ao="3.3369E-002" />
     <nuclide name="B-10" xs="71c" ao="1.6769E-005" />
     <nuclide name="B-11" xs="71c" ao="6.7497E-005" />
-    <sab name="lwtr" xs="10t" />
+    <sab name="HH2O" xs="71t" />
   </material>
 
 <!-- material 2: Fuel (2.459 w/o with B-10 for impurities) -->
diff --git a/tests/test_void/materials.xml b/tests/test_void/materials.xml
index 57ab4f7364..8ac0eb753f 100644
--- a/tests/test_void/materials.xml
+++ b/tests/test_void/materials.xml
@@ -41,7 +41,7 @@
     <nuclide name="Fe-56" ao="4.6739e-05" />
     <nuclide name="Fe-57" ao="1.0794e-06" />
     <nuclide name="Fe-58" ao="1.4365e-07" />
-    <sab name="be" xs="10t" />
+    <sab name="be" xs="71t" />
   </material>
 
   <!-- Steel Diaphragm and Steel Shaft -->