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2. Portable oxygen concentrator - Wikipedia

   en.wikipedia.org/wiki/Portable_oxygen_concentrator

   A lightweight portable oxygen concentrator: Inogen One G3 (2,2 kg) Sequal Equinox, transportable concentrator with a high oxygen flow rate. A portable oxygen concentrator (POC) is a device used to provide oxygen therapy to people that require greater oxygen concentrations than the levels of ambient air. It is similar to a home oxygen ...

3. Oxygen concentrator - Wikipedia

   en.wikipedia.org/wiki/Oxygen_concentrator

   An oxygen concentrator takes in air and removes nitrogen from it, leaving an oxygen-enriched gas for use by people requiring medical oxygen due to low oxygen levels in their blood. [4] Oxygen concentrators provide an economical source of oxygen in industrial processes, where they are also known as oxygen gas generators or oxygen generation plants.

4. Aqua-Lung - Wikipedia

   en.wikipedia.org/wiki/Aqua-Lung

   Air Liquide held the patent on the original "Aqualung" (also written as "Aqua-Lung" or "Aqua Lung") until the patent expired sometime around 1960 to 1963. The term "Aqualung", as far as is known, first appeared in print on page 3 of Jacques-Yves Cousteau 's first book, The Silent World , in 1953.

5. High altitude breathing apparatus - Wikipedia

   en.wikipedia.org/wiki/High_altitude_breathing...

   There are different aviation oxygen systems and delivery methods available depending on the specific application. The oxygen source may be chemical oxygen generators, high pressure portable gaseous oxygen storage systems (gas cylinders), on-board oxygen generating systems (oxygen concentrators), or liquid oxygen systems. [4]

6. Aqua Lung/La Spirotechnique - Wikipedia

   en.wikipedia.org/wiki/Aqua_Lung/La_Spirotechnique

   It can be worn on the front or on the back. It is rated as duration on a filling: oxygen 4 hours or more, soda-lime 7 hours at 21.1 °C (70 °F). Operational depth range is 0-7m or 0-10m depending on the organisation's code of practice. [13] [14] It is 48 cm = 19.2 inches high, 30 cm = 12 inches wide, 19 cm = 7.6 inches thick.

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