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Define: EN 143:2000 + A1 2006

Definition updated 19th February 2024

EN143 Particulate Filters 

This standard specifies the requirements for particle filters for use as part of a respiratory protective device. Particle filters are classified according to their filtering efficiency. There are three classes of particle filters: P1, P2, and P3. P1 filters are intended for use against solid particles only. P2 and P3 filters are subdivided according to their ability to remove both solid and liquid particles or solid particles only.

The Globus Group Glossary

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