Calibration Gas, CGA Number Not Applicable, Container Type Cylinder, Cylinder Capacity 34 L, Cylinder Diameter 3.13 in, Cylinder Height 10.64 in, For Use With All OEM Gas Detectors, Gas Mixture Sulfur Dioxide 10 ppm, Gas Type Sulfur Dioxide, Product Type Calibration Gas, Chemical Formula SO2, CAS Number 7446-09-5, Accuracy +/-5 Percent, Background Gas Air, Calibration Certificate NIST, Cylinder Material Aluminum Alloy, Outlet Connection Size 5/8 In.-18, Outlet Connection Type UNF