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

Cal Gas Direct Incorporated Calibration Gas Field 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 Monoxide in a Steel Disposable Cylinder
• Vinyl Tubing 3 Feet in lenght
• Hard Case Model CC-17/34-Black