BS EN 779:1993 Particulate air filters for general ventilation. Requirements, testing, marking
Withdrawn
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This European Standard refers to particulate air filters for general ventilation. These filters are classified according to their performance.
This European Standard contains requirements to be met by particulate 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 by themselves be quantitatively 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 European Standard applies to air filters which are to be tested between an airflow rate of 0,24m3/s (850m3/h) and 1,39m3/s (5000m3/h) and have an initial atmospheric dust spot efficiency lower than98%.
This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies.
EUROVENT 4/4: Sodium chloride aerosol test for fillers using flame photometric technique.
