As of January 2017, the new global test standard ISO 16890 for filter testing and assessment replaces the previous standard EN 779 and will be the only valid filter standard from July 2018.
This new method for the evaluation of air filter elements will be determined with regard to the particle classes PM1, PM2,5 and PM10, which are also used as evaluation parameters by the WHO (World Health Organization) and environmental authorities.
ISO16890 defines testing procedures and a classification system for air filters used in general ventilation equipment. This new standard provides the first opportunity for global harmonization as it proceeds to replace the two existing standards; ASHRAE 52.2 which is dominant in USA and EN779:2012 which is dominant in Europe.
Major differences between ISO 16890 and existing standards
As Systemair we are changing our filter definitions according to the new standard. In the below table 1.1 you can find common old definitions of EN 779 standard and correlating new definitions for the ISO 16890 standard and also a link to a more in-debth presentation of the new ISO 16890 standard.