Sensidyne offers a sensitive direct reading detector tube for
monitoring airborne levels of methylene chloride (dichloromethane). The
tube measures in the range of the OSHA PEL and action level. Tube No.
180S has a measuring range of 10 to 200 ppm at four pump strokes and a
range of 30 to 1,000 ppm at two pump strokes. Direct reading results are
available in about six minutes. The system includes a piston type
volumetric pump for rugged reliability and can monitor about 300
substances. Circle #212