DS EN 1822-1:2009
DS EN 1822-1:2009 High Efficiency Air Filters (Epa, Hepa And Ulpa) - Part 1: Classification, Performance Testing, Marking Pertains 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 applicati