Calibration Gas, CGA Number Not Applicable, Container Type Cylinder, Cylinder Capacity 103 L, Cylinder Diameter 3.3 in, Cylinder Height 13.6 in, For Use With All OEM Gas Detectors, Gas Mixture Carbon Monoxide 100 ppm, Hydrogen Sulfide 25 ppm, Methane (25 Percent LEL) 1.25 Percent, Oxygen 18 Percent, Pentane (50 Percent LEL), Gas Type Carbon Monoxide, Methane, Oxygen, Product Type Calibration Gas, Chemical Formula CH4, CO, O2, CAS Number 630-08-0, 74-82-8, 7782-44-7, Accuracy +/-5 Percent