Changes

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The term chemical refining is used for all refining processes that employ the classic separation methods – dissolving, precipitation, filtration, washing. As opposed to the other methods, the chemical refining process rarely allows the collection of a representative sample. The precious metal amounts contained in the supplied scrap can usually only be determined at the completion of processing. Only for electrolytes and rinse waters is it possible to obtain the expected amount of recovered precious metals through an upfront chemical analysis.