chemistry fixes

code/game/objects/items/devices/scanners.dm

@@ -466,7 +466,7 @@ SLIME SCANNER
 				msg += "<span class='notice'>Subject is not addicted to any reagents.</span>\n"
 
 			var/datum/reagent/impure/fermiTox/F = M.reagents.has_reagent(/datum/reagent/impure/fermiTox)
-			if(istype(F))
+			if(istype(F,/datum/reagent/impure/fermiTox))
 				switch(F.volume)
 					if(5 to 10)
 						msg += "<span class='notice'>Subject contains a low amount of toxic isomers.</span>\n"

code/modules/reagents/chemistry/machinery/chem_master.dm

@@ -434,11 +434,11 @@
 					state = "Gas"
 				var/const/P = 3 //The number of seconds between life ticks
 				var/T = initial(R.metabolization_rate) * (60 / P)
-				var/datum/chemical_reaction/Rcr = get_chemical_reaction(R.type)
+				var/datum/chemical_reaction/Rcr = get_chemical_reaction(R)
 				if(Rcr && Rcr.FermiChem)
 					fermianalyze = TRUE
 					var/pHpeakCache = (Rcr.OptimalpHMin + Rcr.OptimalpHMax)/2
-					var/datum/reagent/targetReagent = beaker.reagents.has_reagent(R.type)
+					var/datum/reagent/targetReagent = beaker.reagents.has_reagent(R)
 
 					if(!targetReagent)
 						CRASH("Tried to find a reagent that doesn't exist in the chem_master!")
@@ -463,9 +463,9 @@
 				var/T = initial(R.metabolization_rate) * (60 / P)
 				if(istype(R, /datum/reagent/fermi))
 					fermianalyze = TRUE
-					var/datum/chemical_reaction/Rcr = get_chemical_reaction(R.type)
+					var/datum/chemical_reaction/Rcr = get_chemical_reaction(R)
 					var/pHpeakCache = (Rcr.OptimalpHMin + Rcr.OptimalpHMax)/2
-					var/datum/reagent/targetReagent = reagents.has_reagent(R.type)
+					var/datum/reagent/targetReagent = reagents.has_reagent(R)
 
 					if(!targetReagent)
 						CRASH("Tried to find a reagent that doesn't exist in the chem_master!")
@@ -483,7 +483,7 @@
 
 
 /obj/machinery/chem_master/proc/end_fermi_reaction()//Ends any reactions upon moving.
-	if(beaker.reagents.fermiIsReacting)
+	if(beaker && beaker.reagents.fermiIsReacting)
 		beaker.reagents.fermiEnd()
 
 /obj/machinery/chem_master/proc/isgoodnumber(num)

code/modules/reagents/chemistry/reagents/other_reagents.dm

@@ -60,7 +60,7 @@
 		B = new(T)
 	if(data["blood_DNA"])
 		B.blood_DNA[data["blood_DNA"]] = data["blood_type"]
-	if(!B.reagents)
+	if(B.reagents)
 		B.reagents.add_reagent(type, reac_volume)
 	B.update_icon()
 

code/modules/reagents/reagent_containers.dm

@@ -128,8 +128,7 @@
 		target.visible_message("<span class='danger'>[M] has been splashed with something!</span>", \
 						"<span class='userdanger'>[M] has been splashed with something!</span>")
 		for(var/datum/reagent/A in reagents.reagent_list)
-			R += A.type + " ("
-			R += num2text(A.volume) + "),"
+			R += "[A.type] ([A.volume]),"
 
 		if(thrownby)
 			log_combat(thrownby, M, "splashed", R)