how to test copper purity

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... Specification value Inspection frequencies method 8 um 10 um 12 um 18 um % A ≥ 99.9 C IPC-TM-650-2.3.15 Area weight g/㎡ A 72±4 89±5 10...

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Principle: According to the buoyancy method of Archimedean principle, can show gold karat, density and purity% rapidly and accurately. Specifications:...

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