This particulate test was conducted in an 1800 square foot home. The house represents normal living conditions (cooking, sleeping, HVAC running, doors opening and closing, car moving in and out of the garage, visitors, etc.). This is exactly the type of environment in which air purifiers are used. BioTec, an accredited third party air quality testing company, completed the test. As depicted below, the first few days showed very little change. By day 14, the house was as clean as an ISO5 CLEAN ROOM (bacteria test not completed).