P99

Translingual Etymology mul en P99 Noun mul noun A en filtration type that efficiently filters out 99% of airborne en particulate particulates of 0.3 en micron microns μm (and all larger particles) and is strongly resistant to oils. By extension, filtration en standard of 99% of airborne particulates A en filter implementing the P99 standard. Coordinate terms mul P1, mul P2, mul P3 mul FFP1, mul FFP2, mul FFP3 Related terms mul R95, mul P95, mul N95 mul R99, mul N99 mul R100, mul P100, mul N100 English Etymology From en oil-Proof with 99% filtration efficiency in en NIOSH air filtration ratings. Noun ~ mul P99; en NIOSH P99. en uncountable P99 standard en countable P99 filter Coordinate terms en R100, en P100, en N100 99.97% filtration Related terms en N99 non-oil-proof filter standard en R99 oil-resistant filter standard