Filter Classes

 

Approximate arrestance for particle-size-fractions of filter classes G1 to F9 (acc. EN 779); for clean filters

 

Particle size
[µm]

Arrestance [%]

G1

G2

G3

G4

M5

M6

F7

F8

F9

0,1

-

-

-

0 -10

5 - 15

25 - 35

35 - 45

45 - 60

0,3

-

-

-

0 - 5

5 - 15

10 - 25

45 - 60

65 - 75

75 - 85

0,5

-

-

0 - 5

5 - 15

15 - 30

20 - 40

60 - 75

80 - 90

90 - 95

1

-

0 - 5

5 - 15

15 - 35

30 - 50

50 - 65

85 - 95

95 - 98

>98

3

0 - 5

5 - 15

15 - 35

30 - 55

70 - 90

85 - 95

>98

>99

>99

5

5 - 15

15 - 35

35 - 70

60 - 90

90 - 99

95 - 99

>99

>99

>99

10

40 - 50

50 - 70

70 - 85

85 - 98

>98

>99

>99

>99

>99

Note:
This table is meant to give an overview about filter classes. Specific arrestances can only be measured under consideration of the actual air media velocity.

Classification of “HEPA” and “ULPA” filters according to EN 1822

 

Filter class

Integral value (for MPPS)1)

Local value2)

Collection efficiency %

Penetration %

Collection efficiency %

Penetration %

E10

85

15

-

-

E11

95

5

-

-

E12

99.5

0.5

-

-

H13

99.95

0.05

99.75

0.25

H14

99.995

0.005

99.975

0.025

U15

99.9995

0.0005

99.9975

0.0025

U16

99.99995

0.00005

99.99975

0.00025

U17

99.999995

0.000005

99.9999

0.0001

  1. Most Penetrating Particle Size (Minimum arrestance for particles between 0,1 - 0,3 µm)
  2. The agreement of lower local values between buyer and seller is permitted

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