Calibration Gas, Container Type Cylinder, Cylinder Capacity 103 L, Cylinder Diameter 3.25 in, Cylinder Height 13.67 in, For Use With Multi-Gas Monitors, Gas Mixture Oxygen 20.8 Percent, Gas Type Oxygen, Product Type Calibration Gas, Accuracy +/-2 Percent, Background Gas Nitrogen, Calibration Certificate NIST, Cylinder Material Steel, Outlet Connection Type C-10, Operating Pressure – Maximum 1,000 psi