New ISO draft standard on filter testing available from IEST

March 7, 2007 — /IEST/ — ROLLING MEADOWS, IL — The Institute of Environmental Sciences and Technology (IEST) announces the publication of the first document produced by the International Organization for Standardization Technical Committee (ISO/TC) 142, Cleaning equipment for air and other gases. ISO/DIS 21220 Particulate air filters for general ventilation

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