Detector Tube Measurement Range 250 to 3 000 micron g/m3 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 Shelf Life 30 mo Application Industrial Safety and Health Sampling Time 60 min (250 to 3 000 microng/m) Sampling Volume 3 000 mL