Old copper powder. | |||
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Old copper powder. This high-purity copper powder is at least 20 years old, or so says Ethan. The color is characteristic of copper minus its metallic sheen (due to the fineness of the powder, not oxidation). Source: Ethan Currens Contributor: Theodore Gray Acquired: 9 February, 2009 Text Updated: 8 February, 2009 Price: Trade Size: 1" Purity: 99.999% | |||
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