Detector Tube, Measurement Range 0.02 to 0.7 Percent vol/0.04 to 1.4 Percent vol, Gas Detected Carbon Dioxide, For Use With Mfr. No. NX-1000-100, Mfr. No. NX-1000-130, Mfr. No. NX-1000-150, Mfr. No. NX-1000-200, Mfr. No. NX-1000-230, Mfr. No. NX-1000-250, Color Change Pink to Yellow, 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 Hygiene