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ANSI/ASHRAE Standard 52.2-2017 - Method of Testing General Ventilation Air-Cleaning Devices for Removal Efficiency by Particle Size

American Society of Heating Refrigeration and Air-Conditioning Engineers
American National Standards Institute,
Publication Date

Standard establishing a test procedure for evaluating the performance of air-cleaning devices as a function of particle size.  This is the current version of the standard, which was published in the year 2017, and is available for preview and purchase at the reference link.  The ASHRAE bookstore also has previous versions of the standard, published in the years 2012, 2007, and 2000, which are available in preview form (except for 2000) or to purchase to view in full.