Air Purifiers

Air Purifiers Audio and Media

Environment Report [GLRC]

GLRC is a news service committed to revealing the relationship between the natural world and the everyday lives of people in the Great Lakes region and across North America. GLRC is based at Michigan Radio in Ann Arbor. GLRC reports are heard on public radio stations around the country. Visit this podcast's Web site

Updates: Mondays at 11:15 a.m. EST
Duration: approx 25 minutes

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Air Purifiers Definitions and Factiods

Air Purifer Definitions 2

Filter

A Filter is any porous device that allows the passage of air but traps air born particles, thus cleaning the air.

HEPA Filter

HEPA stands for High Efficiency Particulate Air. HEPA filters were developed during World War Two as a safety device for the Manhattan Project, the American effort to develop nuclear weapons. HEPA filters use glass fibre as a filter and can clean 99.7 per cent of particles above 0.3 microns in diameter. Though brittle, these filters are now widely used in a variety of filtration devices, and are widely considered to be the best air filter available to the public.