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April 1999

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Subject:
Re: Problem during strip dry film
From:
"[log in to unmask]" <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Mon, 12 Apr 1999 13:00:32 -0400
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I would question the statement that there is much less metal dissolved
with MEA present. MEA is an excellent complexer, that is it tends to make
copper more soluble and also more difficult to precipitate. Have you
measured the copper concentration of your MEA stripper vs caustic?

thanks
John

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