Calibration Gas, CGA Number CGA 600, Container Type Cylinder, Cylinder Capacity 58 L, Cylinder Diameter 3.5 in, Cylinder Height 14.25 in, For Use With GasAlert Series Sensors, Gas Mixture Carbon Monoxide 100 ppm, Gas Type Carbon Monoxide, Product Type Calibration Gas, Chemical Formula CO, Accuracy +/-5 Percent, Background Gas Nitrogen, Calibration Certificate Included, Cylinder Material Aluminum, Outlet Connection Type C-10, Operating Pressure – Maximum 500 psi