27 Nov, 2016 by electrolytic assay.
Should be free of the following: Excessively leaded, tinned, soldered copper wire; brass and bronze wire; excessive oil content, iron, and non-metallics; copper wire from burning, containing insulation; hair wire; burnt wire which is brittle; and should be reasonably free of ash. Hydraulically briquetted copper subject to agreement.
Criteria for purity : 95-99% purity
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Categories : Minerals & Metallurgy, Copper Scrap