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 Hexane (25 Percent LEL) 0.275 Percent, Gas Type Hexane, Product Type Calibration Gas, Chemical Formula C6H14, CAS Number 110-54-3, Accuracy +/-5 Percent, Background Gas Air, Calibration Certificate NIST, Cylinder Material Steel, Outlet Connection Size 5/8 In.-18, Outlet Connection Type UNF