Filterklassen En
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EN Filters Classification
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Filter application Particulate air filters for general ventilation EPA, HEPA and ULPA
Test EN 779:2012 evaluation of filter performanceat 0,944 m/s (or nominal flow)EN 1822:2011 (Part 1 to 5)
Evaluation of filter performance by nominal flow
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G1 ASHRAE dust(72% fine test dust
ISO 12103-1:1997 A223% carbon black
and 5% cotton linters)
250 50 Am < 65 G1
G2 250 65 Am < 80 G2
G3 250 80 Am < 90 G3
G4 250 90 Am G4
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MM5
DEHS(Di-Ethyl-Hexyl-
Sebacate)0.23.0 m
450 40 Em < 60 F5
M6 450 60 Em < 80 F6
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F7 450 80 Em < 90 35 F7
F8 450 90 Em < 95 55 F8
F9 450 95 Em 75 F9
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E EPA: Efficient Particulate Air filter
E10
DEHS(Di-Ethyl-Hexyl-
Sebacate) MPPS
0.10.3 m
85 15 H10
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E11 95 5 H11
E12 99.5 0.5 H12
H HEPA: High Efficiency Particulate Air filterH13 99.95 0.05 99.75 0.25 H13
H14 99.995 0.005 99.975 0.025 H14
U ULPA: Ultra Low Penetration Air filter
U15 99.9995 0.0005 99.9975 0.0025 U15
U16 99.99995 0.00005 99.99975 0.00025 U16
U17 99.999995 0.000005 99.9999 0.0001 U17
Air filters by filter classes
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