Index: firmware/App/Modes/ModeROPermeateSample.c
===================================================================
diff -u -rd325999b7b3ea03b7e294cb8a0b97df93812fbe9 -re2406180bf569fb495b709542c12da099c8e23ea
--- firmware/App/Modes/ModeROPermeateSample.c	(.../ModeROPermeateSample.c)	(revision d325999b7b3ea03b7e294cb8a0b97df93812fbe9)
+++ firmware/App/Modes/ModeROPermeateSample.c	(.../ModeROPermeateSample.c)	(revision e2406180bf569fb495b709542c12da099c8e23ea)
@@ -48,9 +48,9 @@
 // ********** private data **********
 
 #define RO_PERMEATE_SAMPLE_DATA_PUB_INTERVAL            ( MS_PER_SECOND / TASK_GENERAL_INTERVAL )                   ///< Mode RO permeate sample data publish interval in counts.
-#define ACID_PUMP_SPEED_ML_PER_MIN                      30.6F                                                       ///< Acid concentrate pump speed in mL/min.
+#define ACID_PUMP_SPEED_ML_PER_MIN                      -30.0F                                                      ///< Acid concentrate pump speed in mL/min.
 // The acid pump is 2% faster than the acid pump to create a flow from acid to bicarb line during sampling
-#define BICARB_PUMP_SPEED_ML_PER_MIN                    -30.0F                                                      ///< Bicarb concentrate pump speed in mL/min.
+#define BICARB_PUMP_SPEED_ML_PER_MIN                    30.6F                                                       ///< Bicarb concentrate pump speed in mL/min.
 #define RO_PUMP_TARGET_FLOW_RATE_LPM                    0.8F                                                        ///< RO pump target flow rate during flush/fill in L/min.
 #define RO_PUMP_MAX_PRESSURE_PSI                        130                                                         ///< Maximum RO pump pressure during flush/fill states in psi.
 #define FLUSH_DRAIN_WAIT_TIME_MS                        ( 2 * SEC_PER_MIN * MS_PER_SECOND )                         ///< Flush Drain path wait time in milliseconds.