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The silver chemical refining technique consists in dissolving silver alloys in nitric acid (HNO 3). Such refining method produces solid silver with a purity of 998/1000.

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Rarely do manufacturers talk shop about refining gold jewelry scraps and wastes. Read on to know about how to refine (and free of impurities) fold scraps.

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Refining Gold with Sulphuric Acid Refining Gold with Sulphuric Acid

Refining Gold with Sulphuric Acid

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The Art and Science of Refining Gold at Home The Art and Science of Refining Gold at Home

The Art and Science of Refining Gold at Home

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Gold Refining Value Addition

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