diff --git a/code/modules/reagents/chemistry/holder.dm b/code/modules/reagents/chemistry/holder.dm
index ce7819ed7a..5ae6b8f35c 100644
--- a/code/modules/reagents/chemistry/holder.dm
+++ b/code/modules/reagents/chemistry/holder.dm
@@ -750,6 +750,8 @@
 			del_reagent(R.id)
 		else
 			total_volume += R.volume
+	if(total_volume <= 0)
+		pH = 7
 	return 0
 
 /datum/reagents/proc/clear_reagents()