Page 24 - CATALOGO MASCARILLAS KN95-FPP2

Page 15 of 18 Report No. 20(04)0336P

EN 149:2001+A1:2009
Clause Requirement + Test Result - Remark Verdict

The test consists of subjecting the particle P
filtering half mask to a sinusoidal breathing
simulation, whilst the sample is surrounded by
a known concentration of dolomite dust in air.
Following the exposure, the breathing
resistance and the filter penetration of the
sample particle filtering half mask are
measured.

8.10.2 Test equipment Meet the requirements P
specified

8.10.3 Test conditions P
Dust: DRB 4/15 dolomite P
The size distribution of dolomite dust is given in P
Table 3 of this standard.
8.10.4 Test procedure P
Convey dust from the distributor to the dust P
chamber where it is dispersed into the air stream
3
of 60 m /h.
Fit the sample particle filtering half mask in a P
leaktight manner to a dummy head or a
suitable filter holder located in the dust
chamber. Connect the breathing machine and
humidifier to the sample and operate for the
specified testing time.

The concentration of dust in the test chamber P
may be measured by drawing air at 2 l/min
through a sampling probe equipped with a pre-
weighed, high efficiency filter (open face,
diameter 37 mm) located near the test sample
Calculate the dust concentration from the P
weight of dust collected, the flow rate through
the filter and the time of collection.

8.10.5 Assessment of clogging P
Following the exposure, measure the Measured 2.5 mbar at 95 P
breathing resistance of the particle filtering half l/min, and 1.8 mbar at 160
mask using clean air. Then measure the filter l/min
penetration in accordance with 8.11.
8.11 Penetration of filter material P

The device shall be mounted in a leaktight P
manner on a suitable adaptor and subjected to
the test(s), ensuring that components of the
device that could affect filter penetration
values such as valves and harness attachment
points are exposed to the challenge aerosol.

TRF No. EN 149_1A