Matt, Residential CO detectors are not applicable to the workplace (refer to the detector's instructions). They respond too slowly. If there is a potential for a hazardous exposure, I recommend an industrial monitor since CO has no warning properties. This is a good, relatively inexpensive monitor: http://www.indsci.com/AirAware/. Under certain circumstances (e.g., unattended use), I recommend connecting the CO monitor (and exhaust flow monitor) to a fail close valve at the regulator. Here are some other toxic gas safety issues to consider: http://risk.arizona.edu/healthandsafety/labchemicalsafety/MinReqforCSL-3Toxi cCorrosiveGasUse.pdf My 2-cents, -Frank Demer -----Original Message----- From: DCHAS-L Discussion List [mailto:DCHAS-L**At_Symbol_Here**LIST.UVM.EDU] On Behalf Of Matt Lundgren Sent: Wednesday, June 09, 2010 12:00 PM To: DCHAS-L**At_Symbol_Here**LIST.UVM.EDU Subject: [DCHAS-L] CO Detector for Academic Lab It seems we have more and more labs wanting to work with carbon monoxide and I'm wondering when you require a detector and what type. Where do you draw the line for requiring a detector? Do you allow residential detectors for certain processes? When do you require a detector be linked into a communication system for alarms, security, etc? Is this based upon quantity, the process, all of the above? The labs will have quantities ranging from 80-140 cubic feet in a single cylinder. Thanks, Matt
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