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EN 143: 2000
Respiratory protective devices. Particle filters. Requirements, testing, marking


EN 143 specifies particle filters for use as components in unassisted respiratory protective devices with the exception of escape apparatus and filtering facepieces.

 

 Class 
 

Designation
 

EN143

EN136

Filter
 penetration 


 

Face leakage
+ valve

 

Total inward leakage
 

P1

Low efficiency

< 20 %

< 0,05%

< 20,05%

P2

Average efficiency

< 6 %

< 0,05%

< 6,05%

P3

High efficiency

< 0,05%

< 0,05%

< 0,1%

 

 Class 

Designation
 

EN143

EN140

Filter
 penetration 

Face leakage
+ valve

Total inward leakage

P1

Low efficiency

< 20 %

< 2 %

< 22 %

P2

Average efficiency

< 6 %

< 2 %

< 8 %

P3

High efficiency

< 0,05%

< 2 %

< 2,05%

 

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