The black is from CS drying on the lid. Without the water, silver ions cannot exist and oxidize into silver oxides which are generally black in color.
Not a problem..and very hard to remove.

Ode

At 10:09 PM 8/29/2005 -0700, you wrote:
>>>>
I noticed that if I store cs in a plastic container that the lid starts to get a black residue on it...any comments on this as to why this happens...would it be a good idea or not to use plastic for mailing cs?
Thanks much deb


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