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From: [log in to unmask] (P. G. Wilson)
Date: Sat, 7 Dec 1996 10:25:50 -0500
To: [log in to unmask]
Subject: GEN: TOC Labs and Acid Copper
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(1) I am looking for labs for routine or round robin analysis of total
organic carbon in acid copper baths.

(2) I am aware that graphite is not detectable due to insufficient
reaction in persulfate/CO2 detector instruments without initial
combustion.
a.  Does one generally know whether all                   graphite
is removed during batch carbon             treatment?
b.   What are the negative ramifications of
graphite in an Acid Copper bath? (e.g.,               Nodules??)
Thanks in advance.
P.G. Wilson
Chemist