Particle Filters
Particle filters are classified according to EN 143:2000 or EN 143:2021, GOST 12.4.246-2016 in 3 classes: P1, P2, P3 in ascending order of the filter performance.
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Important notice: In any case applicable National Regulations must be observed, especially to determine maximum allowable concentrations of toxic gases when using filters in conjunction with half or full face masks. Always the lowest concentration applies. |
WARNING!
When using particle filters against radioactive substances, micro
organisms (virus, bacteria, fungi and spores thereof) and bio
chemically active substances (enzymes, hormones), only P3 filters
with full face masks must be used.
Failure to follow this warning can result in serious personal injury or death.
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The higher particle filter class includes the protective range (retention capability) of the lower particle filter class when using in conjunction with the same facepiece. Pre-filters may be used to prevent premature clogging through large particles (e.g. when paint spraying), therefore a more frequent replacement of the Pre-filters may be necessary, if the breathing resistance increases. |
The additional marking with “R” (reusable) means, additional tests according to EN 143:2000 were done to verify, that the particle filter or the particle part of combination filters is qualified for usage after an exposure against aerosols and may be used for more than one shift. Filter marked with "NR" (not reusable) must only be used for a single shift only against particles.