Eurovent 4/9 - 1997: Method of testing air filters used in general ventilation for determination of fractional efficiency - English

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1997 - Method of testing air filters used in general ventilation for determination of fractional efficiency
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eurovent_PG-FIL_1997_4_9_EN
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Developments in the aerosol technology allow to have access to filter fractional efficiency. The Eurovent Working Group 4b has developed a new method of testing air filters used in general ventilation for determination of fractional efficiency, adapted for a better use of filters in industrial process and in the field of indoor air quality. This new method Eurovent 4/9 has replaced the old Eurovent 4/5 method. This is the English version of the Recommendation
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