anchor.diff:  	desc = "You can set a list of allowed reagents and amounts. Once the chamber has these reagents, will let the products through."
   	id = "reaction_chamber"
   	build_type = PROTOLATHE
  -	materials = list(MAT_METAL = 1000, MAT_GLASS = 500)
  +	materials = list(/datum/material/iron = 1000, /datum/material/glass = 500)
   	construction_time = 75
   	build_path = /obj/machinery/plumbing/reaction_chamber
   	category = list("Misc","Medical Designs")
  
positive.code: 	desc = "A RCD for plumbing machines! Cannot make ducts."
  	id = "plumb_rcd"
  	build_type = PROTOLATHE
  	materials = list(MAT_METAL = 20000, MAT_GLASS = 10000, MAT_PLASTIC = 20000, MAT_PLASMA = 6000, MAT_DIAMOND = 5000, MAT_BLUESPACE = 5000, MAT_GOLD = 5000, MAT_SILVER = 5000)
  	construction_time = 150
  	build_path = /obj/item/construction/plumbing
  	category = list("Misc","Medical Designs")
  
negative.code: 	desc = "A big piped funnel for putting stuff in the pipe network."
  	id = "plumb_in"
  	build_type = PROTOLATHE
  	materials = list(/datum/material/iron = 400, /datum/material/glass = 400)
  	construction_time = 75
  	build_path = /obj/machinery/plumbing/input
  	category = list("Misc","Medical Designs")
  