P99

Translingual

Etymology

English P99

Noun

P99

1. A filtration type that efficiently filters out 99% of airborne particulates of 0.3 microns (“μm”) (and all larger particles) and is strongly resistant to oils.
2. By extension, filtration standard of 99% of airborne particulates
3. A filter implementing the P99 standard.

Coordinate terms

• P1, P2, P3
• FFP1, FFP2, FFP3

Related terms

• R95, P95, N95
• R99, N99
• R100, P100, N100

English

Etymology

From Initialism of oil-Proof with 99% filtration efficiency in NIOSH air filtration ratings.

Noun

P99 (countable and uncountable, plural P99s)

1. P99; Ellipsis of NIOSH P99.
   1. (uncountable) P99 standard
   2. (countable) P99 filter

Coordinate terms

• R100, P100, N100 (99.97% filtration)

Related terms

• N99 (non-oil-proof filter standard)
• R99 (oil-resistant filter standard)