Calibration Gas, CGA Number CGA 600, Container Type Cylinder, Cylinder Capacity 17 L, Cylinder Diameter 2.9 in, Cylinder Height 10.75 in, For Use With All OEM Gas Detectors, Gas Mixture Methane 1950 ppm, Gas Type Methane, Product Type Calibration Gas, Chemical Formula CH4, CAS Number 74-82-8, Accuracy +/-5 Percent, Background Gas Air, Calibration Certificate NIST, Cylinder Material Steel, Outlet Connection Size 3/4 in, Outlet Connection Type NGT, Standards ISO 9001:2015, Reusability Disposable