Calibration Gas, CGA Number CGA 660, Container Type Cylinder, Cylinder Capacity 34 L, Cylinder Diameter 2.9 in, Cylinder Height 11 in, For Use With Mfr. No. 00933, Mfr. No. 03564, Mfr. No. 05866, Mfr. No. 09243, Gas Mixture Oxygen 18 Percent, Gas Type Oxygen, Outlet Connection Gender Female, Product Type Calibration Gas, Chemical Formula O2, CAS Number 7782-44-7, Accuracy +/-5 Percent, Background Gas Nitrogen, Calibration Certificate NIST, Cylinder Material Steel