Calibration Gas, CGA Number Not Applicable, Container Type Cylinder, Cylinder Capacity 66 L, Cylinder Diameter 3.13 in, Cylinder Height 10.64 in, For Use With All OEM Gas Detectors, Gas Mixture Carbon Monoxide 900 ppm, Oxygen 9 Percent, Gas Type Carbon Monoxide, Oxygen, Product Type Calibration Gas, Chemical Formula CO, O2, CAS Number 630-08-0, 7782-44-7, Accuracy +/-5 Percent, Background Gas Nitrogen, Calibration Certificate NIST, Cylinder Material Aluminum Alloy, Outlet Connection Size 5/8 in