BLAK-OX® silver/gold oxidizer (safe to ship) 3 oz

JSP®  Blak-Ox DRY ®  , produces the darkest smooth deep black patina on silver and gold.
You must add 3oz of hydrochloric acid to the powdered contents.( Hydrochloric acid can be purchased as muriatic acid at hardware and pool supply stores). Dilute with water for shades of gray. Works on silver, gold, copper, brass and bronze. Do not use on Aluminum.    If not sealed properly JSP  Blak-Ox  will oxidize the closest metals. We recommend that you double bag  the bottle and store away from all metal materials. Handle with Care