ISO16890 New Europe Standard, EN779, ASHRAE 52.2
Relative New ISO 16890 standard which replace the EN779 standard in Europe from Jul 2018 is similar to US ASHRAE 52.2. However, filter specialists who are familiar will notice similaries to the MERV in the 0.3-1.0um, 0.3-1.0um, 1-3um range. The arrestance weight efficiencies which is still relational and useful for Coarse dust or big dust or pre/primary filters. The new info will relate closer to the Building Indoor air quality PM1, PM2.5, PM4, PM10 common terms as we see a global pollution of industrialisation, extreme weather and haze.
The focus is in the secondary filtration which did not change much as the EN779 do address them in the test except to catogerise for wider information. The further categorisation gives more information can be useful but for most common users, familiar MERV13/14 or F7/F8 80-85%/90-95% will be much easier for daily use and implementation.
| EN779 | ISO ePM1 % | ISO ePM2.5 % | ISO ePM10 % | ISO Coarse % |
ASHRAE 52.2 MERV |
0.3-1.0um % | 1-3um % | 3-10um % | Arrestance>10um % |
| G2 | - | - | - | ≥30% | MERV 3-4 | - | - | - | ≥70-75% |
| G3 | - | - | - | ≥45% | MERV 5-6 | - | - | ≥20-≥35 | ≥80-90% |
| G4 | - | - | - | ≥60% | MERV 7 | - | - | ≥50 | ≥90% |
| G4 | - | - |
>50% |
- | MERV 8 | - |
≥20 |
≥70 |
|
| M5 | - | - |
≥50% |
- |
MERV 9 MERV 10 |
- - |
≥35 ≥50 |
≥75 ≥80 |
|
| M6 | - | 50-65% | >60% | - |
MERV 11 MERV 12 |
≥20 ≥35 |
≥65 ≥80 |
≥85 ≥90 |
|
| F7 | 50-65% | 65-80% | >85% | - | MERV 13 | ≥50 | ≥85 | ≥95 | |
| F8 | 65-80% | >80% | >90% | - | MERV 14 | ≥75 | ≥90 | ≥95 | |
| F9 | >80% | >95% | >95% | - | MERV 15 | ≥85 | ≥90 | ≥95 | |
| E10/11 | NA | NA | NA | NA | MERV 16 | ≥95 | ≥95 | ≥95 |
Coarse dust particles are relative bigger particles >10um like pollen, dust, ash. Hair >40um. Arrestance is based of removal of dust weight which target bigger particles >10um which is heavier in nature.
Conculsion:
For most buildings from commercial to hospitals,clean manufacturing, users, managers,design and build contractors and consultants, the info for recommended indoor air quality filters in buildings or fresh air intake is using F7 MERV13 , F8 MERV14. Remains unchange as design,implemenation and most common to implement in airconditioning as secondary filters.
In most commercial or industrial Aircon/ACMV air filtration, 2 filter layers ir recommended. Pre and Secondary
Cleanrooms, Hospitals or laboratories will require 3 layer which is Pre, Secondary and HEPA
EEOI: Data provided above are for general reference and comparison. We are not responsible for any inaccurate or errors, please refer to the standards for more info.