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Slide 30
    TEXT VERSION OF SLIDE:

    Title: Respirators for IDLH Atmospheres (cont'd)
    Type: Text Slide
    Content:

    Respirators provided only for escape from IDLH atmospheres shall be NIOSH-certified for escape from the atmosphere in which they will be used.

    Exception: Employers may use any atmosphere-supplying respirator, provided they can demonstrate, under all foreseeable conditions, that oxygen levels in the work area can be maintained within the ranges specified in Table II (i.e., between 19.5% and a lower value that corresponds to an altitude-adjusted oxygen partial pressure equivalent to 16% oxygen at sea level).