Filters Classification according to EN779:2012 Standard
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Here is a summary table of the filters performance classification under the European standard EN779:2012. Concerning “Particulate air filters for general ventilation” must meet.

The EN 779 Standard is based on laboratory test (on condition of test aerosols and dusts). Thus the results certainly may be different with actual specific applications. But we can use it as a reference for sure.

The EN 779 Standard laboratory test principal results are as follows:


>Gravimetric arrestance efficiency for synthetic dust

>Efficiency: corresponds to the number-referenced fractional collection efficiency for 0.4 μm particles of the synthetic test aerosol

>Pressure Drop

>Dust holding capacity for synthetic dust




Class

Pressure Drop

Average Arrestance Am

Average Efficiency Em

Minimum Efficiency

Coarse Dust Filters

G1

250 Pa

50% ≤ Am < 65%

–

–

G2

250 Pa

65% ≤ Am < 80%

–

–

G3

250 Pa

80% ≤ Am < 90%

–

–

G4

250 Pa

90% ≤ Am

–

–

Fine Dust Filters

(0,4 µ particles)

M5

450 Pa

–

40% ≤ Em < 60%

–

M6

450 Pa

–

60% ≤ Em < 80%

–

F7

450 Pa

–

80% ≤ Em < 90%

35%

F8

450 Pa

–

90% ≤ Em < 95%

55%

F9

450 Pa

–

95% ≤ Em

70%

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