Air filter for general ventilation - Part 2: Measurement of fractional efficiency and air flow resistance (ISO/DIS 16890-2:2014); German version prEN ISO 16890-2:2014
German title
Luftfilter für die allgemeine Raumlufttechnik - Teil 2: Ermittlung des Franktionsabscheidegrads und des Durchflusswiderstands (ISO/DIS 16890-2:2014); Deutsche Fassung prEN ISO 16890-2:2014
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