Calibration Gas, CGA Number Not Applicable, Container Type Cylinder, Cylinder Capacity 116 L, Cylinder Diameter 3.5 in, Cylinder Height 14.3 in, For Use With All OEM Gas Detectors, Gas Mixture Carbon Monoxide 50 ppm, Hydrogen Sulfide 25 ppm, Oxygen 19 Percent, Pentane (25 Percent LEL) 0.35 Percent, Gas Type Carbon Monoxide, Hydrogen Sulfide, Oxygen, Pentane, Product Type Calibration Gas, Chemical Formula C5H12, CO, H2S, O2, CAS Number 109-66-0, 630-08-0, 7782-44-7, 7783-06-4