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Measuring OEL's
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#1 Posted : 08 March 2007 13:53:00(UTC)
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Posted By Helen Edginton I have just uncovered a significant difference in the results for monitoring perchloroethylene. If I use the official measurement as stated in EH40 the reading is over the permissable 8hrTWA levels. But, if I use the manufacturers measurement the reading is well within the thresholds. Before I loose the will to live can anyone help? Thanks in advance.
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#2 Posted : 08 March 2007 13:56:00(UTC)
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Posted By Paul Leadbetter Helen If you are in the UK, you must use the WEL which is 50 ppm (345 mg m3) for an 8-hour reference period or 100 ppm (689 mg m3) for a 15 minute reference period. Paul
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