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