Calibration Gas, CGA Number Not Applicable, Container Type Cylinder, Cylinder Capacity 34 L, Cylinder Diameter 3.13 in, Cylinder Height 10.64 in, For Use With All OEM Gas Detectors, Gas Mixture Carbonyl Sulfide 5 ppm, Gas Type Carbonyl Sulfide, Product Type Calibration Gas, Chemical Formula COS, CAS Number 463-58-1, Accuracy +/-5 Percent, Background Gas Nitrogen, Calibration Certificate NIST, Cylinder Material Aluminum Alloy, Outlet Connection Size 5/8 In.-18, Outlet Connection Type UNF