What is a Micron and why should I care about small particles?
A micron is 1/25,000th of an inch. A human hair is about 150 microns; the smallest thing that can be seen with the naked eye is about 10 microns. It is the largest particles, above 5 microns, that cause equipment problems and are what most filters are able to catch. However, 98% of the particles in the air are smaller than 1 micron. These “sub-micron” particles are not caught by most filters and can get through our bodies’ natural defenses when inhaled. Further, they can stay suspended in the air for days until they are breathed in. An increasing number of studies have found these sub-micron particles to be a significant health hazard. To effectively clean the air from a health point, the sub-micron particles must be removed. Dynamic Air Cleaners will remove up to 98% of these particles on a multiple pass basis. For example, when tested by the Canadian Department of Health in a test house, after 10 hours of operation, a Dynamic Air Cleaner was able to remove 97% of the particles in the
