Item#2, but any etchant that enters the etcher chamber, be it fresh or
with some copper, it is going to mix with the bulk etchant in the
etcher, and the drop in copper content inside the etcher won't be so
great the etching ability is dropped, will it?
______________________________ Reply Separator _________________________________
Subject: Re: [TN] Ammonia Etchant - Replenisher
Author: "TechNet Mail Forum." <[log in to unmask]>, at corp
Date: 1/21/98 8:52 PM
Item # 1 is, indeed, legit. Item #2 is also since "fresh" etchant, w/o Cu will
not etch, so the etchant that is rinsed from the exiting panels does increase
the Cu content. Item #3 is propaganda.
Al Hamilton
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