Hydrogen Sulfide (H2S) Colorimetric Gas Detection Tubes - Air, Gas & HVAC

This Colorimetric Gas Detection tube is quick, accurate and provides low-cost measurements. They have a solid metal construction with a lifetime warranty. Calibration and other maintenance is not required by this piece of equipment. They are easy-to-read with sharp, clear colour change which directly corresponds to the concentration of gas present. It has a shelf life of 12 to 15 months. The standard range is 0.2 – 3 ppmv whereas the extended range is 0.1 – 6 ppmv. They come as 5 packs of 10.