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N99. In DICTIOUS you will not only get to know all the dictionary meanings for the word
N99, but we will also tell you about its etymology, its characteristics and you will know how to say
N99 in singular and plural. Everything you need to know about the word
N99 you have here. The definition of the word
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Translingual
Etymology
English N99
Noun
N99
- 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.
- By extension, filtration standard of 99% of airborne particulates
- A filter implementing the N99 standard.
Coordinate terms
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)
- N99; Ellipsis of NIOSH N99.
- (uncountable) N99 standard
- (countable) N99 filter
Coordinate terms
- R95 (oil-resistant filter standard)
- P95 (oil-proof filter standard)