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BS EN 1822-1-2009
Schwebstofffilter (EPA,HEPA und ULPA). Klassifikation,Leistungsprüfung,Kennzeichnung High efficiency air filters (EPA,HEPA and ULPA) Part 1:Classification,performance testing,marking Filtres. air. haute efficacit (EPA,HEPA et ULPA). Classification,essais de performance et marquage
适用范围：This European Standard applies to high efficiency particulate and ultra low penetration air filters (EPA, HEPA and ULPA) used in the field of ventilation and air conditioning and for technical processes, e.g. for applications in clean room technology or pharmaceutical industry.It establishes a procedure for the determination of the efficiency on the basis of a particle countingmethod using a liquid (or alternatively a solid) test aerosol, and allows a standardized classification of these filters in terms of their efficiency, both local and integral efficiency.
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