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A powered air purifying respirator equipped with a belt-type filter blower, which delivers air to an elastic face mask.
Other names: PAPR
Regulatory body: National Institute for Occupational Safety and Health (NIOSH) of the United States
Regulations: 42 CFR 84
NIOSH classification: TC-21C
The PAPR, full-body protective suit and biosafety cabinet used in BSL-3 laboratories. All components of the PAPR can be seen: the waist component containing the fan, filter and battery; the hose; and the mask, which here is a soft and loose one.
The Powered Air Purifying Respirator (PAPR) is a type of respirator designed to protect workers from polluted air. The PAPR consists of a head-worn device and a fan assembly. It actively sucks in the surrounding air that contains one or more pollutants or pathogens, effectively filtering out most of the harmful substances, and then delivers the clean air to the user's face, mouth, or nose. Its protection level is higher than that of N95 type filtering masks. PAPR is sometimes also called a positive pressure mask, a blower unit, or simply a blower.
The modular design of the PAPR enables it to be customized according to different working environments. Regardless of the type, the PAPR consists of the following components: [1]
A certain head-worn device (mask or helmet),
A fan driven by an electric motor to send inhaled air into the device;
A filter (or multiple filters) for delivering breathing air to the user;
And batteries or other power sources.
