Detector Tube Measurement Range 0.2 to 66 ppm Gas Detected Benzene For Use With Mfr No GV-100-SOHA-TR Mfr No GV-110-S-TR Mfr No GV-110-SOHA-TR Color Change White to Brown Operating Pressure Ambient Operating Temperature - Minimum 32 Degrees F Tube Material Glass Break-Off Tip Yes Calibrated Yes Product Type Gas Detection Tube Sampling Method With Pump Shelf Life 2 yr Application Industrial Safety and Health Sampling Time 6 min (0.2 to 20 ppm)