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Re: Chromate



Mike,

Several of my clients in the printing industry eliminated chromium from
their operations in the late 1980s and early 1990s.  I would suggest looking
for the source of the chromium and seeing if it cannot be eliminated,
probably by substituting with a non-hazardous waste generating alternative.

Ralph

Ralph E. Cooper, Ph.D.
J.D. expected May 1999
Case Western University School of Law

14139 Woodstream
San Antonio, TX 78231
210-479-5490 (4)
rmcooper@flash.net

-----Original Message-----
From: mmachinski@bercen.com <mmachinski@bercen.com>
To: p2tech@great-lakes.net <p2tech@great-lakes.net>;
chemalliance@lists.lyris.net <chemalliance@lists.lyris.net>;
listproc@mfeeley.cc.utexas.edu <listproc@mfeeley.cc.utexas.edu>
Date: Thursday, April 01, 1999 8:55 AM
Subject: Chromate


>I was wondering if anyone might be able to help me out. We have a division
of
>our company that makes screens for another division of our company that
does the
>printing. The division that makes the screens is having a problem with high
>chromium numbers. This is being caused by washing the emulsions of off the
>screen so that they can be reused. The chromium(actually chromate) is
coming
>from the emulsion on the screens. Does anyone have any suggestions in
>eliminating this problem. We know would could precipitate it out with SO2,
but
>we were wondering if there was another way, other rhan chemical treatment.
Thank
>you very much.
>
>Mike
>
>