DIN EN 13779:2007 Ventilation for non-residential buildings - Performance requirements for ventilation and room-conditioning systems English version EN 13779:2007-09
DIN EN 1822-1 High efficiency air filters (EPA, HEPA and ULPA) - Part 1: Classification, performance testing, marking; German version EN 1822-1:2019*, 2019-10-01 Update
DIN EN 779 Particulate air filters for general ventilation - Determination of the filtration performance; German version EN 779:2012*, 2012-10-01 Update