Filter Classes according EN 779 and EN 1822 - Quick Overview
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ISO 29463 - New standard for EPA, HEPA and ULPA filters
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BS EN 1822-3:2009 - High efficiency air filters (EPA, HEPA and ULPA). Testing flat sheet filter media (British Standard)
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De EN1822 norm voor absoluutfilters | Lees alle informatie over deze norm - TOPS Luchtfilters
