Calibration Gas, CGA Number Not Applicable, Container Type Cylinder, Cylinder Capacity 116 L, Cylinder Diameter 3.5 in, Cylinder Height 14.3 in, For Use With All OEM Gas Detectors, Gas Mixture Pentane (30 Percent LEL) 0.42 Percent, Gas Type Pentane, Product Type Calibration Gas, Chemical Formula C5H12, CAS Number 109-66-0, Accuracy +/-5 Percent, Background Gas Air, Calibration Certificate NIST, Cylinder Material Aluminum Alloy, Outlet Connection Size 5/8 In.-18, Outlet Connection Type UNF