Filter Classes for Air Handling Units
EN ISO 16890 classifies the dust particles relevant for inhalation according to the measured degree of efficiency (%) in the three internationally recognised particle size classifications/divisions PM (Particulate Matter):
- PM10 (≤10 µm, particulates passing the larynx, approx. 72 % mass fraction (wi) in city air)
- PM2,5 (≤2,5 µm, particulates and spores penetrates into the gas exchange regions of the lung (alveolus), approx. wi = 9 % in city air)
- PM1 (≤1 µm, particulates and bacteria penetrates the deepest part of the lungs such as the bronchioles or alveolidie, approx. wi = 3 % in city air)
Particle filter according to filter class ISO 16890
| Prefilters | Medium filters | Fine filters | |||||
|---|---|---|---|---|---|---|---|
| ISO Coarse | ISO ePM10 | ISO ePM 2,5 | ISO ePM 1 | ||||
| 95 % | G4 | 95 % | M6 | 95 % | F7 | 95 % | F9 |
| 90 % | 90 % | 90 % | 90 % | ||||
| 85 % | 85 % | 85 % | 85 % | ||||
| 80 % | 80 % | 80 % | 80 % | ||||
| 75 % | 75 % | 75 % | 75 % | F8 | |||
| 70 % | 70 % | 70 % | 70 % | ||||
| 65 % | 65 % | 65 % | 65 % | F7 | |||
| 60 % | 60 % | M5 | 60 % | M6 | 60 % | ||
| 55 % | G3 | 55 % | 55 % | 55 % | |||
| 50 % | 50 % | 50 % | 50 % | ||||
| 45 % | |||||||
| 40 % | G2 | ||||||
| 30 % | |||||||
The listing of the previous filter classes G2 to F9 is for orientation only. However, a direct assignment of the original standard according to EN 779 to ISO 16890 is not possible.
Particulate Air Filters according to EN 1822-1:2009
| Filter Class | Separation Efficiency | Transmission Rate | Fields of Application | |
|---|---|---|---|---|
| E10 | 85 | 15 | Final filters for rooms with high and highest rquirements (e.g. in medicine, in laboratories; production rooms in food- pharmaceutical- and electrical industries) | |
| E11 | 95 | 0,5 | ||
| E12 | 99,5 | 0,05 | Exhaust air filters in nuclear facilities and for cleanrooms of classes ISO 7 and 5 | |
| H13 | 99,95 | 0,05 | ||
| H14 | 99,995 | 0,005 | Final filters for cleanrooms of classes ISO 4 and 3 | |
| U15 | 99,9995 | 0,0005 | ||
| U16 | 99,99995 | 0,00005 | ||
| U17 | 99,999995 | 0,000005 | ||
Room Air
HVAC systems for the ventilation of buildings, data centers, etc.
Process Air Technology
Air handling systems in food filling and surface technology
Gastronomy
Filtering in company and system catering, restaurants, snack bars etc.
Cleanroom Technology
HEPA filter for rooms with high and highest requirements
Smart Finish
Particle Measurement
The basics of particle measurement are carried out according to the classification of air cleanliness according to ISO 14644-1 and are carried out with a aerosol particle counter in the measuring ranges 1: > 0.5 µm and 2: > 5.0 µm.