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2. Air ioniser - Wikipedia

   en.wikipedia.org/wiki/Air_ioniser

   An air ioniser (or negative ion generator or Chizhevsky's chandelier) is a device that uses high voltage to ionise (electrically charge) air molecules. Negative ions, or anions, are particles with one or more extra electrons, conferring a net negative charge to the particle. Cations are positive ions missing one or more electrons, resulting in ...

3. Air purifier - Wikipedia

   en.wikipedia.org/wiki/Air_purifier

   Air purifier. An air purifier or air cleaner is a device which removes contaminants from the air in a room to improve indoor air quality. These devices are commonly marketed as being beneficial to allergy sufferers and asthmatics, and at reducing or eliminating second-hand tobacco smoke .

4. Drinking water quality in the United States - Wikipedia

   en.wikipedia.org/wiki/Drinking_water_quality_in...

   EPA's Consumer Confidence Rule of 1998 requires community public water suppliers to provide customers with annual reports of drinking water quality, called Consumer Confidence Reports (CCR). Each year by July 1 anyone connected to a public water system should receive in the mail an annual water quality report that tells where your water comes ...

5. 9 Best Air Purifiers of 2023, According to Testing - AOL

   www.aol.com/lifestyle/9-best-air-purifiers-2023...

   The triple-duty machine is a heater, fan and air purifier all in one. Using a True HEPA filter, this Dyson air purifier claims to clear up to 99.97% of airborne pollutants, including smoke from ...

6. Do Air Purifiers Actually Work? Here's What Experts Say - AOL

   www.aol.com/air-purifiers-actually-heres-experts...

   Every model included in the Good Housekeeping Institute's rigorously tested guide to the best air purifiers you can buy has a true HEPA filter. The air purifier's fan draws air into the filter and ...

7. 5 best lab-tested air purifiers - AOL

   www.aol.com/news/5-best-lab-tested-air-144708356...

   We tried top-rated, lab-certified air purifiers from brands like Blueair, Instant and ... It also has a 4.6-star average rating from over 31,000 reviews on Amazon. It has four speed modes: low ...