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 counting method 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.
EN 1822-1:2009 history
1970EN 1822-1:2019 High efficiency air filters (EPA, HEPA and ULPA) - Part 1: Classification, performance testing, marking
2009EN 1822-1:2009 High efficiency air filters (EPA, HEPA and ULPA) - Part 1: Classification, performance testing, marking
1998EN 1822-1:1998 High Efficiency Air Filters (HEPA and ULPA) - Part 1: Classification, Performance Testing, Marking