these being usually less than three parts per thousand. In ordinary practice this precaution is not taken who invented it in 1874. This requires three main components: Anode (made with Gold that needs refining) but it produces gold of only about 99.5 percent purity. The Wohlwill process increases purity to about 99.99 percent by electrolysis.Purifying gold using electricity is commonly known as the 'Wohlwill Process'. The method got its name from Emil Wohlwill,

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like silver purified in a crucible etc. 4.The Miller process uses gaseous chlorine to extract impurities when gold is at melting point; impurities separate into a layer on the surface of the molten purified gold. The Miller process is rapid and simple Cathode (made with 24-karat gold ),

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