Index: firmware/App/Modes/ModeTreatmentParams.c
===================================================================
diff -u -r22c6e77d77763c5b34b5dd8c3fcd45cb8c16324c -r709def41bcde8e2e59d83c5e9c5a06ab0ee74ec8
--- firmware/App/Modes/ModeTreatmentParams.c	(.../ModeTreatmentParams.c)	(revision 22c6e77d77763c5b34b5dd8c3fcd45cb8c16324c)
+++ firmware/App/Modes/ModeTreatmentParams.c	(.../ModeTreatmentParams.c)	(revision 709def41bcde8e2e59d83c5e9c5a06ab0ee74ec8)
@@ -8,7 +8,7 @@
 * @file    ModeTreatmentParams.c
 *
 * @author  (last)      Sean Nash
-* @date    (last)      10-Feb-2023
+* @date    (last)      15-Mar-2023
 *
 * @author  (original)  Sean Nash
 * @date    (original)  29-May-2020
@@ -433,7 +433,7 @@
         {
             F32 uFRate = uFVolumeMl / (F32)treatmentDuration;
 
-            if ( uFRate > MAX_UF_RATE_ML_MIN )
+            if ( ( uFRate > MAX_UF_RATE_ML_MIN ) || ( uFRate < MIN_UF_RATE_ML_MIN ) )
             {
                 accepted = FALSE;
                 rejReason = REQUEST_REJECT_REASON_UF_RATE_OUT_OF_RANGE;