P99 en · NOUN
Etymology
From Initialism of oil-Proof with 99% filtration efficiency in NIOSH air filtration ratings.
Meanings
- (uncountable) P99; Ellipsis of NIOSH P99. ▸ P99 standard
- (countable) P99; Ellipsis of NIOSH P99. ▸ P99 filter
Forms
| Spelling | Features | Labels | Source |
|---|---|---|---|
| P99s | Number=Plur | lexicographic |
Coordinates
P100 · N100 (99.97% filtration) · R100