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The N95 and FFP Standards
USA. The most commonly discussed respirator type is N95. This is an American standard managed by NIOSH – part of the Center for Disease Control (CDC).
Europe uses two different standards. The “filtering face piece” score (FFP) comes from EN standard 149:2001. Then EN 143 standard covers P1/P2/P3 ratings. Both standards are maintained by CEN (European Committee for Standardization).
The Filtration Performance
Let’s see how all the different standards compare:
Respirator Standard & Filter Capacity (removes x% of of all particles that are 0.3 microns in diameter or larger)
- FFP1 At least 80%
- FFP2 At least 94%
- N95 At least 95%
- N99 & FFP3 At least 99%
- N100 At least 99.97%
KN95 vs N95
Whilst theoretically the Chinese KN95 standard has the same specification as N95 respirators – to quote “it is reasonable to consider China KN95, AS/NZ P2, Korea 1st Class, and Japan DS FFRs as equivalent to US NIOSH N95 and European FFP2 respirators”.