Econo-Cal™ RP Reactive Gas Calibration Cylinder, 34 L, 1.45% CH4, 15% O2, 60 PPM CO, 20 PPM H2S, Aluminum / 1 EA

Contains a mixture of 1.45% methane (CH4), 15% oxygen (O2), 60 PPM carbon monoxide (CO), 20 PPM hydrogen sulphide (H2S)|Contains sufficient calibration gas for multiple MSA® instrument calibrations|Nitrogen background gas|Regulator required (sold separately)