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  2. Corsi–Rosenthal Box - Wikipedia

    en.wikipedia.org/wiki/Corsi–Rosenthal_Box

    Based on the cost of their design, this output amounted to $0.08 per CADR, or roughly ten times cheaper than commercial air purifiers, with quieter operation. [ 3 ] A study of a home-built air purifier to remove wildfire smoke, using a box fan and filter mounted in a window, showed that particulate matter between 1 and 10 μm in size was ...

  3. Gallon - Wikipedia

    en.wikipedia.org/wiki/Gallon

    A US liquid gallon contains about 3.7854 kilograms (8.3454 lb) of water at 3.98 °C (39.16 °F), and is about five-sixths of an imperial gallon. There are four quarts in a gallon, two pints in a quart and 16 US fluid ounces in a US pint, making the US fluid ounce ⁠ 1 / 128 ⁠ of a US gallon.

  4. Quart - Wikipedia

    en.wikipedia.org/wiki/Quart

    The Winchester quart is an archaic measure, [10] equal to 1 ⁄ 16 of a Winchester bushel: this is equal to 134.40126 cubic inches or 1.9378781 imperial quarts or 2.2024420 litres. The 2.5 L bottles in which laboratory chemicals are supplied are sometimes referred to as Winchester quart bottles, although these contain 13.5% more than a ...

  5. The 6 Best Air Purifiers for Any Room in the House - AOL

    www.aol.com/lifestyle/6-best-air-purifiers-room...

    Check out the expert-recommended air purifiers that clean out allergens, mold spores, and more. ... June 7, 2023 at 12:10 PM. 6 Rejuvenating Air Purifiers for Your Home Hearst Owned

  6. Air filter - Wikipedia

    en.wikipedia.org/wiki/Air_filter

    Varying standards define what qualifies as a HEPA filter. The two most common standards require that an air filter must remove (from the air that passes through) 99.95% (European Standard) [5] or 99.97% (ASME standard) [6] of particles that have a size greater than or equal to 0.3 μm.

  7. Bushel - Wikipedia

    en.wikipedia.org/wiki/Bushel

    The Winchester bushel is the volume of a cylinder 18.5 in (470 mm) in diameter and 8 in (200 mm) high, which gives an irrational number, of approximately 2150.4202 cubic inches. [4] The modern American or US bushel is rounded to exactly 2150.42 cubic inches, a difference of less than one part per ten million.

  8. The 6 best air purifier deals — including a fan favorite with ...

    www.aol.com/lifestyle/air-purifier-11-000-5...

    The Veva ProHEPA 9000 Air Purifier is absolutely the real deal," one owner exclaimed. "I noticed a major air improvement in the back rooms of my home within only the second day of use.

  9. Air purifier - Wikipedia

    en.wikipedia.org/wiki/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 .

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