Various filtration standards are compared below. Although some of these standards build on one another and are coordinated with one another. Due to the different test conditions, a comparison of the filter classes is only possible approximately! Our Team will be happy to support you in selecting suitable Air filter!
| EN 779:2012 | EN 779:2012 | EN 1822:2009 | ASHRAE‑Standard 52.2-2007 |
|---|---|---|---|
| Coarse Filters Average Arrestance (Am) Final Test Pressure Drop 250 [Pa] | Medium- and Fine Filters Average Efficiency (Em) and Minimum Efficiency(M.E.) of 0.4 µm particles Final Test Pressure Drop 450 [Pa] | (H)EPA- and ULPA-Filters Efficiency | Minimum Efficiency Reporting Value (MERV) |
|
50% ≤ Am < 65% G1 |
MERV 1-4 | ||
|
65% ≤ Am < 80% G2 |
MERV 1-4 | ||
|
80% ≤ Am < 90% G3 |
MERV 5 | ||
|
90% ≤ Am G4 |
MERV 6-8 | ||
|
40% ≤ Em < 60% M5 |
MERV 8-10 |
||
|
60% ≤ Em < 80% M6 |
MERV 9-13 | ||
|
80% ≤ Em < 90% M.E.: 35% F7 |
MERV 13-14 | ||
|
90% ≤ Em < 95% M.E.: 55% F8 |
MERV 14-15 | ||
|
95% ≤ Em M.E.: 70% F9 |
MERV 16 | ||
|
Overall Value ≥ 85% E10 |
MERV 16 | ||
|
Overall Value ≥ 95% E11 |
MERV 16 | ||
|
Overall Value ≥ 99.5% E12 |
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|
Overall Value ≥ 99.95% H13 Local Value ≥ 99.75% |
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|
Overall Value ≥ 99.995% H14 Local Value ≥ 99.975% |
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Overall Value ≥ 99.9995% U15 Local Value ≥ 99.9975% |
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Overall Value ≥ 99.99995% U16 Local Value ≥ 99.99975% |
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Overall Value ≥ 99.999995% U17 Local Value ≥ 99.9999% |
| EN 779:2012 | ||||
|---|---|---|---|---|
| Filter Classes |
ePM1 | ePM2,5 | ePM10 | Coarse |
| G1 | - | - | - | - |
| G2 | - | - | - | 30%-50% |
| G3 | - | - | - | 45%-65% |
| G4 | - | - | - | 60%-85% |
| M5 | 5%-35% | 10%-45% | 40%-70% | 80%-95% |
| M6 | 10%-40% | 20%-50% | 60%-80% | >90% |
| F7 | 40%-65% | 65%-75% | 80%-90% | >95% |
| F8 | 65%-90% | 75%-95% | 90%-100% | >95% |
| F9 | 80%-90% | 85%-95% | 90%-100% | >95% |
References:
- VDMA Air Filter Information (2018-06) page 6 for filter classes G1 - G4 respectively ISO Coarse
- EUROVENT 4/23:2020, page 18 / 9. Annex for filter classes M5 - F9 respectively ePM10, ePM2,5 und ePM1
| Overall Value | Local Value | ||||
|---|---|---|---|---|---|
| Filter Classes
according EN 1822 |
Filter Groups
according ISO 29463 |
Efficiency |
Penetration |
Efficiency |
Penetration |
| E10 | - | ≥ 85% | ≤ 15% | - | - |
| E11 | ISO 15 E | ≥ 95% | ≤ 5 % | - | - |
| ISO 20 E | ≥ 99% | ≤ 1% | - | - | |
| E12 | ISO 25 E | ≥ 99.5% | ≤ 0.5% | - | - |
| ISO 30 E | ≥ 99.90% | ≤ 0.1% | - | - | |
| H13 | ISO 35 H | ≥ 99.95% | ≤ 0.05% | ≥ 99.75% | ≤ 0.25% |
| ISO 40 H | ≥ 99.99% | ≤ 0.01% | ≥ 99.95% | ≤ 0.05% | |
| H14 | ISO 45 H | ≥ 99.995% | ≤ 0.005% | ≥ 99.975% | ≤ 0.025% |
| ISO 50 U | ≥ 99.999% | ≤ 0.001% | ≥ 99.995% | ≤ 0.005% | |
| U15 | ISO 55 U | ≥ 99.9995% | ≤ 0.0005% | ≥ 99.9975% | ≤ 0.0025% |
| ISO 60 U | ≥ 99.9999 % | ≤ 0.0001% | ≥ 99.9995% |
≤ 0.0005% | |
| U16 | ISO 65 U | ≥ 99.99995% | ≤ 0.00005% | ≥ 99.99975% | ≤ 0.00025% |
| ISO 70 U | ≥ 99.99999% | ≤ 0.00001% | ≥ 99.9999% | ≤ 0.0001% | |
| U17 | ISO 75 U | ≥ 99.999995% | ≤ 0.000005% | ≥ 99.9999% | ≤ 0.0001% |
| Filter classes according to
ISO 29461
|
Filter groups |
Test results according to ISO 29463 |
Test results according to ISO 16890 |
|||
| Efficiency at MPPS | ePM1,min | ePM2,5,min | ePM10 | Initial gravimetric arrestance A100 |
||
| ISO T1 | Coarse |
20 % < A100 < 50 % |
||||
| ISO T2 | ≥ 50 % | |||||
| ISO T3 | ≥ 70 % | |||||
| ISO T4 | ≥ 85 % | |||||
| ISO T5 | ePM10 | ≥ 50 % | ||||
| ISO T6 | ePM2,5 | ≥ 50 % | ||||
| ISO T7 | ePM1 |
≥ 50 % | ||||
| ISO T8 | ≥ 70 % | |||||
| ISO T9 | ≥ 85 % | |||||
| ISO T10 | EPA |
≥ 85 % | ||||
| ISO T11 | ≥ 95 % | |||||
| ISO T12 | ≥ 99,5 % | |||||
| ISO T13 | HEPA | ≥ 99,95 % | ||||
