Ounces of pure platinum salts palladium and rhodium

Last reaction is over - dissolving all the copper into solution so we are left with the pure platinum metals ! Long process but it was worth it and seemed to pay off in the end . Platinum refining is the hardest metal to refine as it takes the most powerful Aqua Regina acid to be able to corrode the platinum to dissolve it . Very dangerous platinumousis is incurable and causes eyes -ears to bleed and skin . Lung damage etc do not try without proper training !!!