Certification/Class(Standard) |
FFP2 (EN149-2001) |
|
|
Filter
performance –
(must be ≥ X%
efficient) |
≥ 94% |
Test agent |
NaCl and
paraffin oil |
Flow rate |
95 L/min |
Total inward
leakage (TIL)* –
tested on
human subjects
each
performing
exercises |
≤ 8% leakage
(arithmetic
mean) |
Inhalation
resistance –
max pressure
drop |
≤ 70 Pa (at 30
L/min)
≤ 240 Pa (at 95
L/min)
≤ 500 Pa
(clogging) |
Flow rate |
Varied – see
above |
Exhalation
resistance –
max pressure
drop |
≤ 300 Pa |
Flow rate |
160 L/min |
CO2 clearance
requirement |
≤ 1% |