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Letter 6077
Monitoring EP Bath
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I am environmental engineer, who has been brought in to recommend
waste minimization measures for an electropolishing operation. The
process involves small stainless steel parts, in a bath of methanol
and sulfuric acid. The baths are rather small (4 L). They are being
discarded, every shift or when parts are rejected. Is there a way to
monitor the bath, to find out (before rejects) that the bath is
spent? This is a very specialized medical device, so additives to the
bath are not generally acceptable. Measurements or probes would be
much better. Thanks for any suggestions.
Eric B 
- Hobe Sound, Florida, USA
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