Index: firmware/App/Controllers/ConductivitySensors.h
===================================================================
diff -u -re9036ee8e37aa4f6709e6b3ad5578e2baa51c8f9 -r692ebee72e9c05976d1bea003a4922960c954d14
--- firmware/App/Controllers/ConductivitySensors.h	(.../ConductivitySensors.h)	(revision e9036ee8e37aa4f6709e6b3ad5578e2baa51c8f9)
+++ firmware/App/Controllers/ConductivitySensors.h	(.../ConductivitySensors.h)	(revision 692ebee72e9c05976d1bea003a4922960c954d14)
@@ -31,13 +31,6 @@
  */
 
 // ********** public definitions **********
-
-#define MIN_ACID_CONCENTRATE_CONDUCTIVITY               11062.80                                    ///< Minimum conductivity for acid concentrate 11645.05 - 5%.
-#define MAX_ACID_CONCENTRATE_CONDUCTIVITY               12227.30                                    ///< Maximum conductivity for acid concentrate 11645.05 + 5%.
-
-#define MIN_BICARB_CONCENTRATE_CONDUCTIVITY             13048.14                                    ///< Minimum conductivity for bicarbonate concentrate 13734.88 - 5%.
-#define MAX_BICARB_CONCENTRATE_CONDUCTIVITY             14421.62                                    ///< Maximum conductivity for bicarbonate concentrate 13734.88 + 5%.
-
 #define ACID_NORMAL_CONDUCTIVITY                        11645.05                                    ///< Acid normal operation theoretical conductivity.
 #define BICARB_NORMAL_CONDUCTIVITY                      13734.88                                    ///< Bicarb normal operation theoretical conductivity.