Dear CHAS Members,
I’m looking for some advice and information. Before dismantling for disposal, do you have a standard practice of testing regular Laboratory Chemical Fume hoods ducts for the presence of perchlorates? (I’m not talking about Perchloric Acid Fume hood here). The question arises because for many hoods, the history of usage is not known and in the past unknowingly users may have used such fume hoods for heating perchloric acid in ashing procedures. We have a number of old fume hoods dismantled and replaced by new ones, so far without any problems. I would very much appreciate your advice.
Prabhat C. Goswami, Ph.D.
Biological and Chemical Safety Coordinator
Environmental Health and Safety Office
191 Frank Kennedy Centre
University of Manitoba
Winnipeg, Manitoba R3T 2N2
Tel: (204) 474-8791
FAX: (204) 474-7629
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