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Air purifier

PostPosted: Mon Mar 06, 2017 4:04 pm
by Wilberforce
Air purifier
An air purifier or air cleaner is a device which removes contaminants from the air in a room. These devices are commonly marketed as being beneficial to allergy sufferers and asthmatics, and at reducing or eliminating second-hand tobacco smoke.


full article
https://en.wikipedia.org/wiki/Air_purifier