Considering the impact of particulate matter on human health,evaluation and classification of air filters according to their filtration efficiency of different ranges of particle size(PM1,PM2.5 and PM10)was defined by ISO16890:2016-General Ventilation Air Filters.The comparison between ISO16890 and other standards for air filter were illustrated in aspect of classification of filter class,testing method and testing equipment.The action plan of MayAir in implementing ISO 16890 was stated in this study.
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