A mains electricity (AC-powered) device that uses a combination of a prefilter and a high-efficiency particulate air (HEPA) filter to remove 99.97% of particles greater than 0.3 microns. This device is frequently used to prevent the transmission of tubercul...
A mains electricity (AC-powered) device that uses a combination of a prefilter and a high-efficiency particulate air (HEPA) filter to remove 99.97% of particles greater than 0.3 microns. This device is frequently used to prevent the transmission of tubercul...