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N95 FFP3 FFP2 masks what's the difference? - 2020-11-04 09:32:17
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%  <click to view
N95 At least 95%   <click to view
N99 & FFP3 At least 99%   <click to view
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”. In practice the issue is more complex, and I wouldn’t take for granted that all KN95 respirators are up to the same standard as US N95 or EU FFP2 respirators.

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