Article: `Dateline' does report on Alpine Industries' air purifier; Company denies it made false claims.(BUSINESS)

Alpine Industries, a direct-marketer of air purifying systems that moved its headquarters from Minnesota to Tennessee this year, was the subject of a critical report on NBC's "Dateline" news magazine Tuesday night.

"Dateline" declined to comment on the Alpine report before it aired, but according to a promotional summary on the "Dateline" Web site on the Internet, the report by correspondent Lea Thompson was to examine "claims that a new air purifier can literally clear the air, relieving the miseries of allergies and asthma and even providing protection from the next killer virus. Experts disagree, and Thompson talks to one couple who say the machine didn't ...

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