The maximum airborne level of a contaminant to which an employee may be exposed when
wearing a respirator. It is computed by multiplying the permissible exposure limit (PEL) and the
Assigned Protection Factor (APF).
The maximum airborne level of a contaminant to which an employee may be exposed when
wearing a respirator. It is computed by multiplying the permissible exposure limit (PEL) and the
Assigned Protection Factor (APF).