| Filter |
General properties |
Class |
Effect |
Applications |
| Basis filters |
In general:
- produced in synthetic fibers
- efficient for particles
> 4-5 mm
- air speed < 2.5 m/s
- start pressure drop approximately 50 Pa
- final pressure drop approximately 150 Pa |
EU1 |
Protects against insects and fibers.
Limited effect against larger pollen (<70%)
Ineffective against smoke and blacking particles |
Window units
Heat exchangers
Air heaters
Fiber filters in textile industry |
| EU2 |
Effective against larger pollen (>85%) and larger atmospheric dust.
Limited effect against dust and blacking particles |
Heating and cooling units in
electrical transformers
garages
industrial halls
offices in industry |
| EU3 |
Effective against larger pollen (>85%) and larger atmospheric dust.
Limited effect against dust and blacking particles |
Heating and cooling units in
electrical transformers
garages
industrial halls
offices in industry |
| EU4 |
Limited effect against dust and blacking particles |
In addition to EU3 kitchens and spray paint work shops |
| Fine filters |
In general:
- produced in glass fibers
- efficient for particles > 0.1 mm
- air speed < 2- 3 m/s
- start pressure drop approximately 50-100 Pa
- final pressure drop approximately 200 -250 Pa |
EU5 |
Effective against pollen and finer atmospheric dust
Considerable effect against smoke.
No effect against tobacco smoke |
Churches, sport halls, department stores, schools, hotels
Food stores |
| EU6 |
As EU5 |
As EU5 |
| EU7 |
Effective against pollen and blacking dust |
As EU6
and food industry, laboratories, theatres, hospital rooms, data rooms |
| EU8 |
Very effective against particles and blacking.
Very effective against microbes.
Effective against tobacco smoke. |
Operating theatres, production rooms for fine optics and electronics.
Hospital examination rooms. |
| EU9 |
As EU8 |
As EU8 |
