A very inexpensive way to refine your scrap gold. The Sub Zero method of gold refining is suitable for karat gold, gold filled, refining bench sweeps, polishing sweeps, computer circuit boards, gold nuggets, alluvial gold and about all other forms of gold. Kit includes all the consumable supplies needed, 1 lb. SubZero, 1 lb. urea, 1 lb. Storm Precipant, 1 bottle Precious Metal Detection Liquid and 1 bottle of Ammonium Testing Liquid. Kit does not include muriatic acid, which can be purchased from a paint store or swimming pool supply store. For an instruction sheet before purchasing, email us!!!!