wohlwill process of refining gold - regencypark.
Another large-scale gold refining technique, the Wohlwill Process refines gold to 99.999% purity — the highest purity possible. Developed by Emil Wohlwill in 1987, this electrochemical process uses a 95% pure gold bar as an anode and small sheets of pure, 24-karat gold as the cathode. Contact Supplier