Protocol Gases: What Are They? And Why Do They Surpass the Cost of a Certified Gas Standard?

The United States Environmental Protection Agency calls for the use of Protocol Gases to set air pollution monitors. In the EPA’s estimation, using these gases “helps to ensure that air pollution measurements are accurate and can be trusted.”*

The protocol process was created by the EPA, NIST (the National Institute of Standards and Technology), and relevant entities like the auto industry and specialty gas manufacturers to better the accuracy and stability of calibration gases that are used in air monitoring equipment.

The EPA says that Protocol Gases are “compressed gases used to calibrate air pollution monitors for consistent and reliable monitoring.” That said, it isn’t simply a matter of certified standards. Protocol Gases also require that the recorded gas concentration must be traceable to NIST reference standards and manufactured using the process as described in EPA protocol documentation. This process requires that specialty gas producers get hold of these reference gases for the protocol mixtures they sell. Beyond the costs of buying this reference inventory and the time one must spend to validate both the accuracy and stability of the gas, the EPA also requires that gas suppliers agree to an EPA-coordinated blind test to verify consistency and accuracy.

American Welding & Gas, Inc. takes every known precaution to make sure that each of the protocol gases we offer our Indianapolis customers meets or surpasses the procedure demanded in EPA Publication 600 (2012) and that the specific producing specialty gas laboratory is ISO 1705-compliant. Copies of the compliance documentation, including “round robin” reports, are always available on request. If you’d like additional information, contact us online or call us at .