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2. Powered air-purifying respirator - Wikipedia

   en.wikipedia.org/wiki/Powered_air-purifying...

   A PAPR, gown, and biosafety cabinet in use in a BSL-3 laboratory. All parts of the PAPR are visible: the waist unit holding the fan, filter, and battery; the hose; and the mask, in this case a flexible, loose-fitting one. A powered air-purifying respirator (PAPR) is a type of respirator used to safeguard workers against contaminated air.

3. Respirator assigned protection factors - Wikipedia

   en.wikipedia.org/wiki/Respirator_Assigned...

   The respiratory protective devices (RPD) can protect workers only if their protective properties are adequate to the conditions in the workplace.Therefore, specialists have developed criteria for the selection of proper, adequate respirators, including the Assigned Protection Factors (APF) - the decrease of the concentration of harmful substances in the inhaled air, which (is expected) to be ...

4. Respirator - Wikipedia

   en.wikipedia.org/wiki/Respirator

   Respirator assigned protection factors. Permissible exposure limit – Workplace environmental standard; Personal protective equipment – Equipment designed to help protect an individual from hazards (PPE) Surgical mask – Mouth and nose cover against bacterial aerosols; Workplace respirator testing – Testing of respirators in real life ...

5. Racal suit - Wikipedia

   en.wikipedia.org/wiki/Racal_suit

   The hood is a separate component from the protective suit. The Racal hood is a type of PAPR consisting of a transparent hood connected to a respirator, which is powered by a rechargeable battery. The respirator has three HEPA filters that are certified to remove 99.7% of particles of 0.03 to 3.0 microns in diameter.

6. Mechanical filter (respirator) - Wikipedia

   en.wikipedia.org/wiki/Mechanical_filter_(respirator)

   A powered air-purifying respirator (PAPR) is a type of respirator used to safeguard workers against contaminated air. PAPRs consist of a headgear-and-fan assembly that takes ambient air contaminated with one or more type of pollutant or pathogen , actively removes (filters) a sufficient proportion of these hazards, and then delivers the clean ...

7. Glossary of breathing apparatus terminology - Wikipedia

   en.wikipedia.org/wiki/Glossary_of_breathing...

   respiratory protection respiratory protective equipment Respiratory protective equipment (RPE) is a type of personal protective equipment designed to protect the wearer from a variety of airborne hazards in the form of gas, fume, mist, dust or vapour over the long or short term. Respirators filter the ambient air to remove harmful materials and ...