MSA Benzene Detector Tubes are used to spot test the atmosphere for toxic substances. They contain a granular chemical layer enclosed in a glass tube with a break-off tip. The tip is snapped off, attached to the Kwik-Draw pump, and a sample of the atmosphere is pulled through the tube. If the hazard is present, the chemical layer in the tube will change color. The color length or intensity indicates approximate concentration. 5-100 ppm Range. Pkg. of 10.
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