Index: firmware/App/Modes/ModeDrain.c
===================================================================
diff -u -r1722e975682c9e41e0b75551ada1139d3dc522a6 -ra0966852dd6f9f8e70289b7ea7588677967f3f2f
--- firmware/App/Modes/ModeDrain.c	(.../ModeDrain.c)	(revision 1722e975682c9e41e0b75551ada1139d3dc522a6)
+++ firmware/App/Modes/ModeDrain.c	(.../ModeDrain.c)	(revision a0966852dd6f9f8e70289b7ea7588677967f3f2f)
@@ -247,20 +247,22 @@
             setValveState( VRD2, VALVE_STATE_CLOSED );
         }
 
+#ifndef DISABLE_EMPTY_BOTTLES_ALARMS
         // Detect empty bottles using integrated volumes
-        if ( ( ( ACID_CONCENTRATION_BOTTLE_VOLUME_ML - getChemicalUsedVolumeML( ACID ) ) <= CONCENTRATION_BOTTLE_LOW_VOLUME_ML ) ) // ||  // SRSDG 437
+        if ( ( ACID_CONCENTRATION_BOTTLE_VOLUME_ML - getChemicalUsedVolumeML( ACID ) ) <= CONCENTRATION_BOTTLE_LOW_VOLUME_ML ) // ||  // SRSDG 437
         {
             resetChemicalUsedVolumeML( ACID );
             setThisFisrtFillFlag( TRUE );                                 // indicates bottles need prime
             activateAlarmNoData( ALARM_ID_DG_ACID_BOTTLE_LOW_VOLUME );
         }
 
-        if ( ( ( BICARB_CONCENTRATION_BOTTLE_VOLUME_ML - getChemicalUsedVolumeML( BICARB ) ) <= CONCENTRATION_BOTTLE_LOW_VOLUME_ML ) )  // || // SRSDG 438
+        if ( ( BICARB_CONCENTRATION_BOTTLE_VOLUME_ML - getChemicalUsedVolumeML( BICARB ) ) <= CONCENTRATION_BOTTLE_LOW_VOLUME_ML )  // || // SRSDG 438
         {
             resetChemicalUsedVolumeML( BICARB );
             setThisFisrtFillFlag( TRUE );
             activateAlarmNoData( ALARM_ID_DG_BICARB_BOTTLE_LOW_VOLUME );
         }
+#endif
 
         if ( TRUE == isReservoirTarePending() )
         {   // Tare reservoir load cells at empty if requested