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2. Chemical cartridge - Wikipedia

   en.wikipedia.org/wiki/Chemical_cartridge

   This can also be a symptom of a loose fit the mask to one's face and the leakage of unfiltered air through the gaps between the mask and the face. Historically, this method is the oldest. Respirator cartridge (3M 6009) for protection against mercury vapor and chlorine.

3. Elastomeric respirator - Wikipedia

   en.wikipedia.org/wiki/Elastomeric_respirator

   A powered air-purifying respirator is an elastomeric mask with a battery-powered fan to force air in (except loose-fitting PAPRs) Chemical cartridge for chemical filters used with elastomeric respirators; Mechanical filter respirator for other types of particulate filters; Respirator fit test

4. N95 respirator - Wikipedia

   en.wikipedia.org/wiki/N95_respirator

   An N95 respirator is a disposable filtering facepiece respirator or reusable elastomeric respirator filter that meets the U.S. National Institute for Occupational Safety and Health (NIOSH) N95 standard of air filtration, filtering at least 95% of airborne particles that have a mass median aerodynamic diameter of 0.3 micrometers under 42 CFR 84, effective July 10, 1995.

5. Respiratory protective equipment - Wikipedia

   en.wikipedia.org/wiki/Respiratory_protective...

   Respiratory protective equipment (RPE), also called protective breathing equipment (PBE) in the US, [1] is a form of personal protective equipment designed to protect the wearer from a variety of airborne hazards in the form of a gas, fume, mist, dust or vapour.

6. Stock up on KN95s after the updated CDC guidelines ... - AOL

   www.aol.com/lifestyle/stock-kn95s-updated-cdc...

   Stock up on KN95s after the updated CDC guidelines: These FDA-approved masks are on sale for under $1.50 a pop at Amazon Devon Kelley,Izabella Zaydenberg August 5, 2021 at 3:00 AM

7. Joint Service General Purpose Mask M-50/M-51 - Wikipedia

   en.wikipedia.org/wiki/Joint_Service_General...

   It is an above-the-neck, chemical-biological (CB) respirator that protects against battlefield concentrations of CB agents, toxins, toxic industrial materials, and radioactive particulate matter. The M50/51 masks replace the M40 field protective mask and M42 , the MCU-2/P series masks, and the M45 of the Land Warrior Program .