1. ConsumerReports.org - Ionizing air cleaners, air cleaners: the truth behind ...
   One is that its seal is not an endorsement or statement of clinical efficacy. ... Air cleaners with a CADR of 10 or ...
   http://www.consumerreports.org/main/ detailv4.jsp?CONTENT%3C%3Ecnt_id=581635& FO
2. Air Purifiers - Everything You Need to Know
   It will indicate when each of these filters needs to be replaced. All of the guesswork is eliminated, and you will not be running the air purifier with ...
   http://www.allergyconsumerreview.com/ airpurifiers-information.html
3. Air Purifiers, Air Cleaners: Best Air Purifier Reviews
   Be aware that while air-purifier manufacturers often tout testing data in their advertising, the vast majority of these studies are sponsored and paid for by the manufacturer.
   Product Review - http://www.consumersearch.com/www/house_ and_home/air_purifiers/

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