Concerned about swine flu or other bacteria? Purely Products sells a portable Pocket Purifier that uses a 4-watt germicidal ultraviolet bulb (UV-C) that sterilizes surfaces like countertops. UV-C technology is widely used in hospitals for sanitation—and it is used to sanitize water. The bulbs do contain mercury, though, so you be the judge on how green and healthy that makes them.
If you buy a UV-C product, keep in mind that ultraviolet purifiers utilize germicidal lamps that are designed and calculated to produce a certain dosage of ultraviolet, usually at least 16,000 microwatt seconds per square centimeter, though many units actually have a much higher dosage. Do not use it on skin.
Purely Products also sells a PurelyAnion compact fluorescent lamp (CFL) that also generates negative ion to help purify the air (see demo video below). Negative ions latch on to airborne particles with positive ions, making them too heavy and causing them to fall to the floor.
Negative ions are also said to help relieve depression and stress, while positive ions are said to contribute to adverse effects of our bodies and minds. Though the medical and health benefits of negative ions have long been disputed. Purely Products even sells a negative ion generator for computer users that plugs into a USB port to protect you from all those nasty electronics-generated positive ions.
Steven Castle is Electronic House's managing editor. he has been writing about consumer electronics, homes and energy efficiency topics for two decades. He is also the co-founder of GreenTech Advocates.
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