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2. Doctors Say This Is the Best, Most Effective Way to ... - AOL

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   “Salt water sprays and salt water irrigation can help to really rinse out your nose, and to get rid of viruses, bacteria, and allergens that may be in your nose.” That doesn’t mean blowing ...

3. Nasal irrigation - Wikipedia

   en.wikipedia.org/wiki/Nasal_irrigation

   Nasal irrigation (also called nasal lavage, nasal toilet, or nasal douche) is a personal hygiene practice in which the nasal cavity is washed to flush out mucus and debris from the nose and sinuses, in order to enhance nasal breathing. Nasal irrigation can also refer to the use of saline nasal spray or nebulizers to moisten the mucous membranes.

4. Nasal congestion - Wikipedia

   en.wikipedia.org/wiki/Nasal_congestion

   Nasal obstruction characterized by insufficient airflow through the nose can be a subjective sensation or the result of objective pathology. [10] It is difficult to quantify by subjective complaints or clinical examinations alone, hence both clinicians and researchers depend both on concurrent subjective assessment and on objective measurement of the nasal airway.

5. Portable water purification - Wikipedia

   en.wikipedia.org/wiki/Portable_water_purification

   Instead of using the static pressure of a water supply line to force the water through the filter, pressure is provided by a hand-operated pump. These devices can generate drinkable water from seawater. The Portable Aqua Unit for Lifesaving (short PAUL) is a portable ultrafiltration-based membrane water filter for humanitarian aid. It allows ...

6. This New Water Purifier Removes Pollutants and Microplastics ...

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7. Berkefeld filter - Wikipedia

   en.wikipedia.org/wiki/Berkefeld_filter

   Schematic diagram of a Berkefeld filter Berkefeld field filter. A Berkefeld filter [1] is a water filter made of diatomaceous earth (Kieselgur).It was invented in Germany in 1891, and by 1922 was being marketed in the United Kingdom by the Berkefeld Filter Co. [2] Berkefeld was the name of the owner of the mine in Hanover, Germany, where the ceramic material was obtained.