Calibration Gas, Methane, Nitrogen, Oxygen, 221 L, CGA 165 Connection, +/-5% Accuracy
25 in, For Use With All OEM Gas Detectors, Gas Mixture Methane (50 Percent LEL) 2.Calibration Gas, CGA Number CGA 165, Container Type Cylinder, Cylinder Capacity 221 L, Cylinder Diameter 9 in, Cylinder Height 16.5 Percent, Oxygen 17 Percent, Gas Type Methane, Oxygen, Product Type Calibration Gas, Chemical Formula CH4, O2, CAS Number 74-82-8, 7782-44-7, Accuracy +/-5 Percent, Background Gas Nitrogen, Calibration Certificate NIST, Cylinder Material Steel, Outlet Connection Size 3/4 in.