HEPA Filter || Air filter || filtration mechanism|| what is HEPA filter 

HEPA filter also known as high-efficiency particulate air filter or absolute filter. HEPA filter efficiency is 99.97% of particles whose diameter is equal to 0.3 μm with the filtration efficiency increasing for particle diameters both less than and greater than 0.3 μm. HEPA filters capture pollen, dirt, dust, moisture, bacteria (0.2-2.0 μm), virus (0.02-0.3 μm) etc. HEPA filters are used in applications that require contamination control, such as the manufacturing of disk drives, medical devices, semiconductors, nuclear, food and pharmaceutical products, as well as in hospitals, homes and vehicles. HEPA filters are composed of a mat of randomly arranged fibres.The fibers are typically composed of polypropylene or fiberglass with diameters between 0.5 and 2.0 micrometers. HEPA filter working on tree mechanism such as Inertial Impaction, Interception and diffusion.
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