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Date: | Thu, 21 Mar 1996 09:51:58 -0500 |
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Kevin,
Sulfur is an anion material, and in high enough amounts, can cause a
corrosive reaction. Gold should be impervious to this effect, but silver is
a metal that corrodes easily. You can get cardboards that are minimum in
sulfur, or sulfur-free, but they are more expensive than regular cardboard.
I don't know if you can get carbon impregnated sulfur-free cardboard.
Doug Pauls
Contamination Studies Labs
[log in to unmask]
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