Calibration Test Gas for Air & Nitrox Divers

Certified calibration test gas formulated for analyzers used by air and nitrox divers who wish to test under the CGA Grade D and Grade E standards for maximum allowable carbon dioxide and carbon monoxide content. Elevated oxygen content also tests oxygen analyzers. Contains 10 parts per million* (ppm) carbon monoxide (CO), 1000 ppm* carbon dioxide (CO2), and 23% oxygen (O2) with the balance in nitrogen (N2). 17 L (0.6 cu ft) cylinder equipped with a CGA 600 valve. Requires a compatible CGA 600 regulator, sold separately.


* Represents CGA (Compressed Gas Association) Grade D and Grade E maximum parts per million (ppm) gas content.

PLEASE NOTE: Never expose gas sensors to pressure or you may cause damage and/or false readings. Damaged sensors will not provide accurate gas analysis. Inaccurate gas analysis can lead to serious personal injury or death. Most gas analyzers can be used to analyze a regulated gas sample flow, the contents of a gas cylinder, or the flow from a regulator. The flow rate of gas must equal 1-5 L/min. To produce this flow, a Flow Restrictor and Regulator (like the 400-100 Calibration Test Gas Regulator) may be required.

Due to government regulations, shipping of compressed gases requires special handling and extra costs depending on the ship-to address. Please contact the Nuvair sales team for assistance with ordering test gases.