Filtering facepiece. (dust mask) means a negative pressure particulate respirator with a filter as an integral part of the facepiece or with the entire facepiece composed of the filtering medium, not equipped with elastomeric sealing surfaces and adjustable straps.
Filtering facepiece means a negative pressure particulate respirator with a filter as an integral part of the facepiece or with the entire facepiece composed of the filtering medium.
Filtering facepiece means a negative pressure respi- rator with a filter as an integral part of the facepiece or with the
More Definitions of Filtering facepiece
Filtering facepiece. (dust mask) means a negative pressure particulate respirator with a filter as an integral part of the facepiece or with the entire facepiece composed of the filtering medium. Whenever a filtering facepiece is used to meet the requirements of the standard, it must be NIOSH approved.