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Letter 27411 Tarnishing of copper versus zinc plated object++++ Hello, I was wondering if you knew a way to quickly and nticeably tarnish copper, versus a copper pipe that had been electroplated with zinc. I used electroplating to plate the copper pipe with zinc, and now I need to know how to tarnish an un-plated copper pipe, so I can compare it to my zinc coated pipe. If you could tell me, I would really appreciate it. Thank you, Max L.
Dear Reader, please --
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