Merge pull request #9268 from Thalpy/FERMICHEMCurTweaks

[READY] [Please merge me] Fermichem tweaks: Purity, Astral, RNG, MK, SMilk, SDGF, furranium, hatmium, eigen, nanite.

code/modules/research/designs/misc_designs.dm

@@ -504,7 +504,7 @@
 	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)
+	materials = list(MAT_METAL = 1000, MAT_SILVER = 100, MAT_PLASTIC = 100)
 	build_path = /obj/item/fermichem/pHmeter
 	category = list("Equipment")
 	departmental_flags = DEPARTMENTAL_FLAG_MEDICAL | DEPARTMENTAL_FLAG_SCIENCE

code/modules/research/nanites/nanite_programs/healing.dm

@@ -61,6 +61,9 @@
 /datum/nanite_program/purging/active_effect()
 	host_mob.adjustToxLoss(-1)
 	for(var/datum/reagent/R in host_mob.reagents.reagent_list)
+		if(R.id == "nanite_b_gone")
+			host_mob.adjustToxLoss(4)
+			continue
 		host_mob.reagents.remove_reagent(R.id,1)
 
 /datum/nanite_program/brain_heal