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In this video I will show gold refining from 90g transistor cases. The full process of gold extraction from 350 transistors. Nitric acid was quenched with sulfamic acid and gold was precipitated with hydrazine sulfate. Advertising orders and other offers: VK ► https://vk.com/id238419787 INSTAGRAM ► / detalius_youtube FACEBOOK ► https://www.facebook.com/profile.php?...