R99

Translingual

Etymology

English R99

Noun

R99

  1. A filtration type that efficiently filters out 99% of airborne particulates of 0.3 microns (“μm”) (and all larger particles) and is somewhat resistant to oil.
  2. A filter implementing the R99 standard.

Coordinate terms
  • P1, P2, P3
  • FFP1, FFP2, FFP3

English

Etymology

From Initialism of Resistant to oil particles with 99% filtration efficiency in NIOSH air filtration ratings.

Noun

R99 (countable and uncountable, plural R99s)

  1. R99; Ellipsis of NIOSH R99.
    1. (uncountable) R99 standard
    2. (countable) R99 filter

Coordinate terms
  • N99 (non-oil-resistant filter standard)
  • P99 (oil-proof filter standard)
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