Index: sources/gui/qml/globals/Variables.qml
===================================================================
diff -u -r16a8f25568b4636ebc31e76c86a8031940cc4ad7 -r53ec19e12772f2a73190323438106dc93e4a12df
--- sources/gui/qml/globals/Variables.qml	(.../Variables.qml)	(revision 16a8f25568b4636ebc31e76c86a8031940cc4ad7)
+++ sources/gui/qml/globals/Variables.qml	(.../Variables.qml)	(revision 53ec19e12772f2a73190323438106dc93e4a12df)
@@ -219,6 +219,12 @@
     // Dialysate Conductivity
     readonly property int dialysateCondPrecision    : 1
 
+    // Potassium
+    readonly property int  potassiumPrecision       : 1
+
+    // Calcium
+    readonly property int  calciumPrecision         : 2
+
     function sizeConverted(vSize, vSizePowers, vRound = 2) {
         return (  vSize
                 / vSizePowers   // convert from byte to Giga byte