Die neue Europanorm prEN 779:2010, die das Prüfverfahren von Grob- und Feinstaubfiltern definiert, schafft alltagstauglichere Voraussetzungen zur Klassifizierung von Luftfiltern: Denn fortan bestimmen neben dem mittleren auch der minimale Wirkungsgrad die Filterklassen F7, F8 und F9. Damit können viele Feinstaubfilter aus synthetischen, statisch aufgeladenen Materialien mit schnellem Wirkungsverlust nicht mehr ihrer bisherigen Klassifizierung gerecht werden. Glasfasermedien hingegen erreichen oftmals größere minimale Abscheideleistungen, als es die Norm künftig fordert. Camfil warnt deshalb Planer und Betreiber davor, schlechtere Luftqualitäten zu akzeptieren, als sie mit bereits auf dem Markt erhältlichen Filtermedien erreichbar wären. Der Weltmarktführer für Luftfiltersysteme bezieht sich dabei vor allem auf
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