Compressor OEM's


Manufacturer's, installers, and service providers routinely need to test the air of their customer's equipment as an important final step in their process. Whether a precaution after installation or repair, or whether part of a routine maintenance inspection on equipment in your service area, this step is often required. Or a death could result.

In 1970 Congress passed 30CFR, PartII, SubpartJ, 11.121(b) which states, "Compressed gaseous breathing air shall meet the applicable minimum grade requirements for Type I gaseous air set forth in the Compressed Gas Association (CGA) 'Commodity Specification for Air G-7.1', (Grade D or higher quality)", making periodic testing of compressed breathing air a law.

A variety of CGA G-7.1 grades are used depending upon the type of industry and application the equipment operates in, but the two most common are Grade D and E.

Rocket Air Labs is able to test your breathing air for compliance and is proud to be a part of helping to keep your customer's air safe. We recommend using our Rocket-Air test kit.

Air Specifications: Compressor OEM's

Characteristic CGA Grade D CGA Grade E
Carb. Dioxide 1000 ppm 1000 ppm
Carb. Monoxide 10 ppm 10 ppm
Dew Point
Methane 25 ppm
Nitrogen Bal. Predom. Bal. Predom.
Odor None None
Oil / Particulates 5 mg/m^3 5 mg/m^3
Oxygen 19.5 - 23.5% 20.0 - 22.0%
Table 1: Recommended Limits For Safe Compressed Breathing Air Grades D and E. (Click Row To Learn More.)

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We promise to provide the industry's best test kit and service at the best price. We promise to listen to your needs, resolve all problems quickly, and honor all our commitments.


We are here for you. Please don't hesitate to contact us.
Phone: (800) 830-4064
Fax: (800) 830-4036
Address: P.O. Box 768, Toluca, IL 61369

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