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March 22, 2021

OSHA STANDARD FOR BREATHING AIR

OSHA Standard 29 CFR 1910.134(i)(1)
“Compressed breathing air shall meet at least the requirements for Grade D breathing air described in ANSI/Compressed Gas Association Commodity Specification for Air, G-7.1-1989, to include:
Oxygen content (v/v) of 19.5% - 23.5%;
Hydrocarbon (condensed) content of 5 milligrams per cubic meter of air or less;
Carbon monoxide (CO) content of 10 parts per million (ppm) or less;
Carbon dioxide (CO2) content of 1,000 ppm or less; and
Lack of noticeable odor”

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