N99

Translingual

Etymology

English N99

Noun

N99

  1. A filtration type that efficiently filters out 99% 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 99% of airborne particulates
  3. A filter implementing the N99 standard.

Coordinate terms

  • P1, P2, P3
  • FFP1, FFP2, FFP3

English

Etymology

From Initialism of Not resistant to oil particles with 99% filtration efficiency in NIOSH air filtration ratings.

Noun

N99 (countable and uncountable, plural N99s)

  1. N99; Ellipsis of NIOSH N99.
    1. (uncountable) N99 standard
    2. (countable) N99 filter

Coordinate terms

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