ÖNORM EN ISO 16890-2

This document specifies the aerosol production, the test equipment and the test methods used for measuring fractional efficiency and air flow resistance of air filters for general ventilation. It is intended to be used in conjunction with ISO 16890-1, ISO 16890-3 and ISO 16890-4. The test method described in this document is applicable for air flow rates between 0,25 m^(3)/s (900 m^(3)/h, 530 ft^(3)/min) and 1,5 m^(3)/s (5 400 m^(3)/h, 3 178 ft^(3)/min), referring to a test rig with a nominal face area of 610 mm × 610 mm (24.0 inches × 24.0 inches). This document refers to particulate air filter elements for general ventilation having an ePM(1) efficiency less than or equal to 99 % and an ePM(10) efficiency greater than 20 % when tested as per the procedures defined within the ISO 16890 series. This document is not applicable to filter elements used in portable room-air cleaners.