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2. Air purifier - Wikipedia

   en.wikipedia.org/wiki/Air_purifier

   An air purifier which can use HEPA, ionization, PCO, UVGI, and ozone generation. Ultraviolet germicidal irradiation - UVGI can be used to sterilize air that passes UV lamps via forced air. [21] Air purification UVGI systems can be freestanding units with shielded UV lamps that use a fan to force air past the UV light.

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

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

   Air purifiers usually consist of a filter, or multiple filters, and a fan that sucks in and circulates air. As air moves through the filter, pollutants and particles are captured, and the clean ...

4. Ultraviolet germicidal irradiation - Wikipedia

   en.wikipedia.org/wiki/Ultraviolet_germicidal...

   A low-pressure mercury-vapor discharge tube floods the inside of a biosafety cabinet with shortwave UV light when not in use, killing microbes on irradiated surfaces. Ultraviolet germicidal irradiation (UVGI) is a disinfection technique employing ultraviolet (UV) light, particularly UV-C (180–280 nm), to kill or inactivate microorganisms ...

5. The air purifier you bought during the pandemic may still ...

   www.aol.com/air-purifier-bought-during-pandemic...

   Generally, air purifiers that are running longer and with higher fan speeds will filter more air, which is believed to reduce the amount of exposure to airborne particles and therefore reduce ...

6. UV filter - Wikipedia

   en.wikipedia.org/wiki/UV_filter

   UV filters are sometimes referred to as L37 or L39 filters, depending on the wavelengths of light they filter out. For example, an L37 filter removes ultraviolet light with wavelengths shorter than 370 nanometers (nm), whereas an L39 filter eliminates light with wavelengths shorter than 390 nm.

7. Corsi–Rosenthal Box - Wikipedia

   en.wikipedia.org/wiki/Corsi–Rosenthal_Box

   An example of a homemade unit. The Corsi–Rosenthal Box is a design for a do-it-yourself air purifier that can be built comparatively inexpensively. It consists of four [1] or five [2] [3] HVAC particulate air filters that form a cube and a box fan to draw air through the filters.