Calibration Gas, CGA Number CGA 600, Container Type Cylinder, Cylinder Capacity 34 L, Cylinder Diameter 2.9 in, Cylinder Height 10.75 in, For Use With All OEM Gas Detectors, Gas Mixture Propane (26.19 Percent LEL) 0.55 Percent, Gas Type Propane, Product Type Calibration Gas, Chemical Formula C3H8, CAS Number 74-98-6, Accuracy +/-5 Percent, Background Gas Air, Calibration Certificate NIST, Cylinder Material Steel, Standards ISO 9001:2015, Reusability Disposable