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>> No.30241892 [View]
File: 717 KB, 1225x1543, copper.jpg [View same] [iqdb] [saucenao] [google]
30241892

>>30241562
I did copper electrolytic refining in CuSO4 recently, so you say these crystals mean the copper I obtained is high purity?
I don't know whether that copper sulfate was pure.

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