Detector Tube, Measurement Range 0.8 to 90 ppm, Gas Detected Dimethylformamide, For Use With Gastec Pump, Color Change Pink to Pale Orange Red, Operating Pressure 912 to 1,114 hPa, 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 30 ppm), Sampling Volume 100 mL (1 Pump Stroke), Chemical Formula C3H7NO