Calibration Gas, CGA Number CGA 600, Container Type Cylinder, Cylinder Capacity 17 L, Cylinder Diameter 3.1 in, Cylinder Height 10.6 in, For Use With CD-6B, CD-6G, CD-6H/CD-12H, CD-6MC/CD-12MC, Gas Mixture Carbon Dioxide 400 ppm, Gas Type Carbon Dioxide, Product Type Calibration Gas, Chemical Formula CO2, Background Gas Air