650L Calibration Mixture - ISC18109160

Containing a gas mixture of 25 ppm hydrogen sulphide, 100 ppm carbon monoxide, two percent volume methane and 18 percent oxygen, this calibration gas is +/- two percent accuracy for 51-300 ppm,. +/- five percent accuracy for 21-50 ppm, +/- 10 percent accuracy for two-20 ppm. The aluminum cylinder has a 650 litre capacity, with a maximum pressure of 1600 PSIG, and it measures 19-9/10 inches height x 6-7/8 diameter. The background gas is nitrogen. Show Less