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DIN EN 1822-5:2011

High efficiency air filters (EPA, HEPA and ULPA) - Part 5: Determining the efficiency of filter elements; German version EN 1822-5:2009

This standard establishes a procedure for the determination of the efficiency of filter elements by means of particle counting using a liquid test aerosol. It allows a standardized classification of high efficiency particulate air filters in terms of their efficiency.

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Deutsches Institut für Normung [din]

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