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In the midst of the increasingly widespread spread of the novel coronavirus, the use of air purifiers among the public has also increased. Air purifiers that have a HEPA filtering system are predicted to be the best type to clean the air in the room.
The HEPA (high efficiency particulate air) filter is an air filtration technology with a fine mesh that can trap particles measuring 0.3-0.1 microns. HEPA filters have been widely used in the biomedical field since the 1940s as a deterrent to airborne viral organisms. This technology is claimed to be able to filter as much as 99.97% of airborne particles.