The Definitive Guide to high efficiency particulate air (hepa) filters
Vintage Collection Efficiency Curve with Filter Collection Mechanisms HEPA filters are made up of a mat of randomly arranged fibers.[sixteen] The fibers are usually composed of polypropylene or fiberglass with diameters between 0.five and a couple of.0 micrometers. Usually, these filters are composed of tangled bundles of great fibers. These fibers