Calibration Gas, CGA Number Not Applicable, Container Type Cylinder, Cylinder Capacity 58 L, Cylinder Diameter 3.53 in, Cylinder Height 14.25 in, For Use With All OEM Gas Detectors, Gas Mixture Nitrogen Dioxide 250 ppm, Gas Type Nitrogen Dioxide, Product Type Calibration Gas, Chemical Formula NO2, CAS Number 10102-44-0, Accuracy +/-5 Percent, Background Gas Air, Calibration Certificate NIST, Cylinder Material Aluminum Alloy, Outlet Connection Size 5/8 in, Outlet Connection Type UNF