Detector Tube Measurement Range 0.05 to 4 ppm Gas Detected Hydrogen Sulphide For Use With Mfr No 1A Mfr No GV-100-SOHA-TR Mfr No GV-110-S-TR Mfr No GV-110-SOHA-TR Color Change Yellow to Pink 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 1.5 min (0.1 to 2 ppm)