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MECHANISMS OF FILTRATION FOR HIGH EFFICIENCY FIBROUS FILTERS

High efficiency fibrous filters comprise a large percentage of the filters used around the world today. Applications include respiratory protection, air sampling, clean rooms, industrial processes, and building ventilation systems. A fibrous filter is comprised of a large number of randomly oriented fibers. These fibers form a dense material or mat which captures and retains particles throughout its depth or thickness. It is the thickness, fiber diameter and density of the mat that enables fibrous filters to function.