GASCO Carbon Dioxide Calibration Kit includes: 17 Liter Cylinder of Carbon Dioxide Balance Nitrogen, 17 Liter Cylinder of Zero Air, 71 Series Regulator, Vinyl Tubing, Hard Plastic Calibration Gas Case.

Cal Gas Direct Incorporated CO2 Calibration Gas Kit. Everything you need to Calibrate Onsite or in the Field.

Kit includes:

• 71-Series Regulator CGA 600 (Choose Desired Flow Rate)
• 17 Liters of Zero Air in a Steel Disposable Cylinder
• 17 Liters of Carbon Dioxide in a Steel Disposable Cylinder
• Vinyl Tubing 3 Feet in length
• Hard Case Model CC-17/34-Black