Detector Tube Measurement Range 0.4 to 70 ppm Gas Detected Vinyl Chloride For Use With Gastec Pump Color Change Yellow to Purple Operating Pressure 912 to 1 114 hPa Operating Temperature - Minimum 41 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 3 min (1 to 20 ppm) Sampling Volume 200 mL (2 Pump Stroke) Chemical Formula C2H3Cl