These 10 classes specify two things: the amount of particles filtered by the respirator and whether the respirator is resistant to oil. Filtering facepiece respirators (left) and elastomeric respirators (right) both use NIOSH-approved filters. Powered-air purifying respirators (PAPRs), which use a battery-powered blower to move air through the filter (making it easier for breathe) are also available. Two main styles of respirators fall into this category: filtering facepiece respirators and elastomeric respirators. Note: Particulate filtering respirators belong to the air-purifying respirator category, meaning they remove hazardous particles from the air. NIOSH, a division of the Centers for Disease Control (CDC), has 10 classes of approved particulate filtering respirators. NIOSH Certification Levels for Particulate Filtering Respiratorsįor a respiratory protection program to be OSHA compliant it must use respirators certified by the National Institute for Occupational Safety and Health (NIOSH).
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