ASHRAE publishes revised filtration standard, combines Standard 52.1 and 52.2

January 25, 2013

A newly revised filtration standard from ASHRAE combines two standards aimed at improving the technical accuracy of filter testing. The new standard addresses three air-cleaner performance characteristics of importance to users: the ability of the device to remove particles from the airstream, the total dust holding capacity with arrestance (weight efficiency), and its resistance to airflow.

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