Calibration Gas, CGA Number Not Applicable, Container Type Cylinder, Cylinder Capacity 105 L, Cylinder Diameter 3.2 in, Cylinder Height 12.8 in, For Use With All OEM Gas Detectors, Gas Mixture Butane 0.9 Percent, Ethane 0.9 Percent, Isobutane 0.9 Percent, Methane 0.9 Percent, Propane 0.9 Percent, Gas Type Butane, Product Type Calibration Gas, Chemical Formula C4H10, CAS Number 106-97-8, Accuracy +/-2 Percent, Background Gas Nitrogen, Calibration Certificate NIST, Cylinder Material Aluminum Alloy