2
3M Personal Safety Division
*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:
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:
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
Maximum Filter Penetration
FFP1
20%
FFP2
6%
EN 149:2001+A1:2009
Classification
Maximum Breathing Resistance
Inhalation at 30 l/min
Inhalation at 95 l/min
Exhalation at 160 l/min
FFP1
0.6 mbar
2.1 mbar
3.0 mbar
FFP2
0.7 mbar
2.4 mbar
3.0 mbar
EN 149:2001+A1:2009
Classification
Maximum Breathing Resistance
Inhalation at 95 l/min
Exhalation at 160 l/min (continuous
flow)
FFP1
4.0 mbar (valved respirator)
3.0 mbar (unvalved respirator)
3.0 mbar (valved respirator)
FFP1
22 %
FFP2
8 %
FFP3
2 %
EN 149:2001+A1:2009 Classification
Maximum Total Inwards Leakage
