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Posted in response to keeping copper from tarnishing from Chris on July 25, 2008 at 07:50:48:

Re: keeping copper from tarnishing

I think you've run head-on into the Periodic Table. Other than perhaps coating the Cu with something to keep the O2, SiO2, and NiO2 off of it, you're SOL.

From Raymond Hietapakka - July 26, 2008 at 09:19:12
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Bob Keller