Detector Tube, Measurement Range 1 to 40 Percent, Gas Detected Carbon Monoxide, 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 Blackish 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 3 yr, Application Industrial Safety and Health, Sampling Time 1 min (2 to 50 Percent vol)