scope:

This standard refers to particulate air filters for general ventilation. These filters classified according to their performance. This standard contains requirements to be met by particular air filters. It describes testing methods and the test rig for measuring the filter performance. The performance results obtained in accordance with this standard cannot be themselves be quantatively applied to predict performance in service. In order to obtain results for comparison and classification purposes, particulate air filters shall be tested against an atmospheric aerosol and a synthetic test aerosol. This standard applies to air filters which are to be tested between an airflow rate of 0,24 m3/S (850 m3/h and 1,39 m3/s (5000 m3/h) and have an initial atmospheric dust spot efficiency lower than 98%.