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