['Personal Protective Equipment']
['Respiratory Protection']
03/12/2025
...
All oxygen-deficient atmospheres (when oxygen is less than 19.5 percent by volume) are considered IDLH with one exception. If the employer demonstrates that, under all foreseeable conditions, the oxygen concentration can be maintained within the ranges and for the altitudes specified in Table II of the standard, then any atmosphere-supplying respirator may be used.
['Personal Protective Equipment']
['Respiratory Protection']
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