Calibration Gas, CGA Number Not Applicable, Container Type Cylinder, Cylinder Capacity 103 L, Cylinder Diameter 3.3 in, Cylinder Height 13.6 in, For Use With All OEM Gas Detectors, Gas Mixture Ethylene 10 ppm, Gas Type Ethylene, Nitrogen, Oxygen, Product Type Calibration Gas, Chemical Formula C2H4, CAS Number 74-85-1, Accuracy +/-5 Percent, Background Gas Air, Calibration Certificate NIST, Cylinder Material Steel, Outlet Connection Size 5/8 In.-18, Outlet Connection Type UNF