Advertisement
3M Personal Safety Division
EN 149:2001+A1:2009 Classification
FFP1
FFP2
*Loading of NaCl may be stopped if filter penetration during loading is observed to decrease.
Total Inward Leakage
Ten subjects perform five test exercises whilst wearing the respirator. The total inward leakage inside of the respirator due to
face seal leakage, filter penetration and valve leakage is measured for each subject exercise. The subject mean total inward
leakage for 8 out of 10 subjects shall not exceed the following limits:
EN 149:2001+A1:2009 Classification
FFP1
FFP2
FFP3
Breathing Resistance
The breathing resistance of the respirator is tested during inhalation (continuous flow) and exhalation (cyclical flow). The
breathing resistance of the respirators shall not exceed the following limits:
EN 149:2001+A1:2009
Classification
FFP1
FFP2
Clogging
For single shift use respirators (NR), the clogging test is optional. For reusable respirators (R) this test is mandatory. The respi-
rators are loaded with very high amount of Dolomite dust which will tend to clog the filter. After loading with the required
amount of dust, the breathing resistance of the respirators shall not exceed the following limits:
EN 149:2001+A1:2009
Classification
FFP1
2
Inhalation at 30 l/min
0.6 mbar
0.7 mbar
Inhalation at 95 l/min
4.0 mbar (valved respirator)
3.0 mbar (unvalved respirator)
Maximum Filter Penetration
20%
6%
Maximum Total Inwards Leakage
22 %
8 %
2 %
Maximum Breathing Resistance
Inhalation at 95 l/min
2.1 mbar
2.4 mbar
Maximum Breathing Resistance
Exhalation at 160 l/min (continuous
3.0 mbar (valved respirator)
Exhalation at 160 l/min
3.0 mbar
3.0 mbar
flow)
Advertisement
