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Date: | Mon, 11 Nov 1996 09:57:18 -0500 |
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What causes the copper to appear green? Will this happen if there is no
introduction of contaminants?
Jim
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______________________________ Reply Separator _________________________________
Subject: ASS: Green Contamination
Author: Michel POULIN <[log in to unmask]> at Jabil_Internet
Date: 11/11/96 8:46 AM
Maurice,
According to me it is copper. I've never seen nickel like you
mentionned on pin. Basicaly, the salt can't be deposed.
If it is the case, it is a no go. You have to strip ( uisually
with HNO3 and replate.
Regards,
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