N95

Borrowed from English N95.

N95

1. A filtration type that efficiently filters out 95% of airborne particulates of 0.3 microns (“μm”) (and all larger particles), but which is not resistant to oils.
2. By extension, filtration standard of 95% of airborne particulates.
3. A filter implementing the N95 standard.

• (95% filtration): P2 (from EN 143 standard instead of NIOSH) (94% filtration)

• P1, P2, P3
• FFP1, FFP2, FFP3

• R95, P95
• R99, P99, N99
• R100, P100, N100

Initialism of Not resistant to oil particles with 95% filtration efficiency in NIOSH air filtration ratings.

N95 (countable and uncountable, plural N95s)

1. N95; Ellipsis of NIOSH N95.
   1. (uncountable) The N95 standard.
      • 2022 April 22, David Leonhardt, “Maskless Flying”, in The New York Times‎^[1], archived from the original on 22 April 2022:

        “One-way masking works,” Dr. Amesh Adalja, an infectious-disease specialist at Johns Hopkins University, said. When he is treating tuberculosis patients, they are typically maskless, and he wears an N95 mask to protect himself.

   2. (countable) An N95 filter.
      • 2022 January 14, Tara Parker-Pope, “How to Find a Quality Mask (and Avoid Counterfeits)”, in The New York Times‎^[2], archived from the original on 15 January 2022:

        Unlike cloth masks, high-quality masks — called N95s, KN95s and KF94s — are made with layers of high-tech filtering material that trap at least 94 to 95 percent of the most risky particles.

• R99, P99, N99 (99% filtration)
• R100, P100, N100 (99.97% filtration)

• R95 (oil-resistant filter standard)
• P95 (oil-proof filter standard)

• HEPA
• ULPA
• KF94
• KN95

• N95 on Wikipedia.Wikipedia
• N95 on the Simple English Wikipedia.Wikipedia ^simple