Final testing. Added pH meter too. Compile safe.

code/modules/mob/living/simple_animal/friendly/cat.dm

@@ -372,7 +372,7 @@
 /datum/reagent/fermi/secretcatchem //Should I hide this from code divers? A secret cit chem?
 	name = "secretcatchem" //an attempt at hiding it
 	id = "secretcatchem"
-	description = "An illegal and hidden chem that turns people into cats/catgirls. It's said that it's so rare and unstable that having it means you've been blessed."
+	description = "An illegal and hidden chem that turns people into cats. It's said that it's so rare and unstable that having it means you've been blessed."
 	taste_description = "hairballs and cream"
 	color = "#ffc224"
 	var/catshift = FALSE

code/modules/research/designs/misc_designs.dm

@@ -456,6 +456,17 @@
 	category = list("Equipment")
 	departmental_flags = DEPARTMENTAL_FLAG_SCIENCE | DEPARTMENTAL_FLAG_ENGINEERING
 
+/datum/design/pHmeter
+	name = "pH meter"
+	desc = "A a electrode attached to a small circuit box that will tell you the pH of a solution."
+	id   = "pHmeter"
+	build_type = PROTOLATHE
+	materials = list(MAT_METAL = 1000, MAT_SILVER = 100, MAT_DIAMOND = 100)
+	build_path = /obj/item/pHmeter
+	category = list("Equipment")
+	departmental_flags = DEPARTMENTAL_FLAG_MEDICAL
+
+
 /////////////////////////////////////////
 ////////////Armour//////////////
 /////////////////////////////////////////

code/modules/research/techweb/all_nodes.dm

@@ -69,7 +69,7 @@
 	display_name = "Advanced Biotechnology"
 	description = "Advanced Biotechnology"
 	prereq_ids = list("biotech")
-	design_ids = list("piercesyringe", "crewpinpointer", "smoke_machine", "plasmarefiller", "limbgrower", "defibrillator", "meta_beaker", "healthanalyzer_advanced","harvester","holobarrier_med")
+	design_ids = list("piercesyringe", "crewpinpointer", "smoke_machine", "plasmarefiller", "limbgrower", "defibrillator", "meta_beaker", "healthanalyzer_advanced","harvester","holobarrier_med", "pHmeter")
 	research_costs = list(TECHWEB_POINT_TYPE_GENERIC = 2500)
 	export_price = 5000