Fixes #120

code/modules/reagents/Chemistry-Machinery.dm

@@ -115,21 +115,21 @@
 
 			if(href_list["amount"])
 				var/id = href_list["add"]
-				var/amount = isgoodnumber(text2num(href_list["amount"]))
+				var/amount = Clamp((text2num(href_list["amount"])), 0, 200)
 				R.trans_id_to(src, id, amount)
 
 		else if (href_list["addcustom"])
 
 			var/id = href_list["addcustom"]
 			useramount = input("Select the amount to transfer.", 30, useramount) as num
-			useramount = isgoodnumber(useramount)
+			useramount = Clamp(useramount, 0, 200)
 			src.Topic(null, list("amount" = "[useramount]", "add" = "[id]"))
 
 		else if (href_list["remove"])
 
 			if(href_list["amount"])
 				var/id = href_list["remove"]
-				var/amount = isgoodnumber(text2num(href_list["amount"]))
+				var/amount = Clamp((text2num(href_list["amount"])), 0, 200)
 				if(mode)
 					reagents.trans_id_to(beaker, id, amount)
 				else
@@ -140,7 +140,7 @@
 
 			var/id = href_list["removecustom"]
 			useramount = input("Select the amount to transfer.", 30, useramount) as num
-			useramount = isgoodnumber(useramount)
+			useramount = Clamp(useramount, 0, 200)
 			src.Topic(null, list("amount" = "[useramount]", "remove" = "[id]"))
 
 		else if (href_list["toggle"])
@@ -162,7 +162,8 @@
 				return
 
 			if (href_list["createpill_multiple"])
-				count = Clamp(isgoodnumber(input("Select the number of pills to make.", 10, pillamount) as num),1,max_pill_count)
+				count = input("Select the number of pills to make.", "Max [max_pill_count]", pillamount) as num
+				count = Clamp(count, 1, max_pill_count)
 
 			if(reagents.total_volume/count < 1) //Sanity checking.
 				return
@@ -291,12 +292,6 @@
 	onclose(user, "chem_master")
 	return
 
-/obj/machinery/chem_master/proc/isgoodnumber(var/num)
-	if(isnum(num))
-		return Clamp(round(num), 0, 200)
-	else
-		return 0
-
 /obj/machinery/chem_master/condimaster
 	name = "CondiMaster 3000"
 	condi = 1