Detector Tube, Measurement Range 30 to 500 ppm, Gas Detected Carbon Monoxide, For Use With 20 m Extension Hose, Mfr. No. NX-1000, Tube Material Glass, Break-Off Tip Yes, Calibrated Yes, Product Type Gas Detection Tube, Sampling Method With Pump, Shelf Life 1.5 yr, Application Atmospheric Pollution Survey, Blast Furnace, Combustible Gas Analysis, Garage, Leakage Detection of Coal Gas, Organic Syntheses, Parking Garage, Prediction of Underground Spontaneous Combustion of Coal, Tunnels