EN 143: 2000
Respiratory protective devices. Particle filters. Requirements, testing, marking
Class |
Designation |
EN143 |
EN136 |
|
Filter |
Face leakage |
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 |
Face leakage |
Total inward leakage |
||
P1 |
Low efficiency |
< 20 % |
< 2 % |
< 22 % |
P2 |
Average efficiency |
< 6 % |
< 2 % |
< 8 % |
P3 |
High efficiency |
< 0,05% |
< 2 % |
< 2,05% |