Calibration Gas, CGA Number Not Applicable, Container Type Cylinder, Cylinder Capacity 44 L, Cylinder Diameter 3.13 in, Cylinder Height 10.64 in, For Use With All OEM Gas Detectors, Gas Mixture Carbon Monoxide 200 ppm, Hydrogen Sulfide 25 ppm, Pentane (25 Percent LEL) 0.35 Percent, Gas Type Carbon Monoxide, Hydrogen Sulfide, Nitrogen, Oxygen, Pentane, Product Type Calibration Gas, Chemical Formula C5H12, CO, H2S, N2, O2, CAS Number 109-66-0, 630-08-0, 7727-37-9, 7782-44-7, 7783-06-4