Calibration Gas, CGA Number CGA 350, 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 Ammonia 100 ppm, Gas Type Ammonia, Product Type Calibration Gas, Chemical Formula NH3, Accuracy +/-5 Percent, Background Gas Nitrogen, Calibration Certificate Included, Cylinder Material Aluminum, Outlet Connection Type C-10, Operating Pressure – Maximum 500 psi