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    Gunsmithing Our own Copper/Carbon Solvent Test

    Re: Our own Copper Solvent Test Hi The reason why KG 12 removes copper so quickly is down to the following facts, There are very few chemicals that remove copper without harming other metals. KG 12 contains 2 forms of Cyanide, Potassium Sulfide & Sodium Cyanide mixed with De-Ionized Water...