A few questions first:
If those are the only two components in the mixture (a very big “if), one very expensive way of doing it would be to rig a continuously operating photoionization detector in the room with a 9.8 eV lamp. Xylene (m-Xylene, specifically) ionization potential is 8.56 eV while ethanol’s IP is 10.47 eV (Reference here is the NIOSH Pocket Guide). I say expensive because you’ll be frequently performing calibration checks and replacing lamps. According to a RAE technical bulletin a 9.8 eV lamp’s life is typically 1 year (though I could not see if that was “continuous use” or not – and I suspect “not”). Good preventative maintenance programs will change out detectors at about twice the frequency of the manufacturer’s recommendation, so figure at a minimum, 2 lamps per year.
I’m putting this out to the List on behalf of an area hospital. Does anyone have any advice on this question?
Our lab has recyclers for xylene and ethyl alcohol. I am trying to find an explosion proof external monitor to install outside the still room. I would like to have the level set to alarm below the OSHA TWA level. I have reached out to multiple vendors. Some have not replied and some do not have a monitor for our needs.
Does anyone have any advice for her on equipment or vendors?
Absolutely, thank you and appreciate your help!
Alissa S. Groff, MT (ASCP)
Laboratory Safety Coordinator
WellSpan York Hospital
Phone: (717) 812-3598
Fax: (717) 851-4663
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