استاندارد اروپایی طبقه بندی فیلتر ها
| 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 |
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| 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 |
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| 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 |
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| 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. |
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| EU9 | As EU8 | As EU8 | ||
| Micro filters | In general: – produced in glass fibers in combination with separators of paper, plastic or aluminum – efficient for particles > 0.01 mm – air speed < 0.5 – 1.0 m/s – start pressure drop approximately 250 Pa – final pressure drop according life span and economy |
EU10 | ||
| EU11 | ||||
| EU12 | ||||
| EU13 | ||||
| EU14 |
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