The story
Initialism of Not resistant to oil particles with 95% filtration efficiency in NIOSH air filtration ratings.
Etymology from Wiktionary, CC BY-SA 4.0.
N95
Today it means: The N95 standard. Full definition →
Today it means: The N95 standard. Full definition →
Initialism of Not resistant to oil particles with 95% filtration efficiency in NIOSH air filtration ratings.
Etymology from Wiktionary, CC BY-SA 4.0.