EN 1822

Efficient air filters (EPA), high efficiency air filters (HEPA) and ultra low penetration air filters (ULPA) are classified and tested according to EN 1822 standard for ventilation and air conditioning systems such as cleanroom applications.


New ISO 29463 standard formed as global standard with 5 sections, adapted from EN 1822 called “High-efficiency filters and filter media for removing particles in air”.


Each HEPA and ULPA filters are tested and certified individually according to European and American Standards by Ulpatek. Prefiltering with close subclass filters to increase the service life of HEPA and ULPA filters is recommended.

Filter Classes and Equivalents
EN 1822 - Figures
EN 1822