From my friends at CSTI:
Do you ever wonder how long your air supply would last if your SCBA conked out? There your are, in a world of chemicals, any one of them would kill you in a heartbeat, and then... your SCBA fails... Uh oh... So here's an answer to my own question for you to ponder and... think about.
The attached graph comes from an article in Applied Occupations and Environmental Hygiene, Volume 14:443-448, 1999 (that’s the journal published by ACGIH).
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