Calibration Gas, CGA Number Not Applicable, Container Type Cylinder, Cylinder Capacity 58 L, Cylinder Diameter 3.53 in, Cylinder Height 14.25 in, For Use With All OEM Gas Detectors, Gas Mixture Carbon Monoxide 100 ppm, Hydrogen Sulfide 25 ppm, Oxygen 18 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