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  2. Primary life support system - Wikipedia

    en.wikipedia.org/wiki/Primary_Life_Support_System

    The interior of the Apollo PLSS Diagram of the A7L PLSS and OPS, with interfaces to the astronaut and the Lunar Module cabin. The portable life support system used in the Apollo lunar landing missions used lithium hydroxide to remove the carbon dioxide from the breathing air, and circulated water in an open loop through a liquid-cooled garment, expelling the water into space, where it turned ...

  3. Self-contained breathing apparatus - Wikipedia

    en.wikipedia.org/wiki/Self-contained_breathing...

    Some types are also referred to as a compressed air breathing apparatus (CABA) or simply breathing apparatus (BA). Unofficial names include air pack, air tank, oxygen cylinder or simply pack, terms used mostly in firefighting. If designed for use under water, it is also known as a scuba set (self-contained underwater breathing apparatus).

  4. Rebreather - Wikipedia

    en.wikipedia.org/wiki/Rebreather

    Exhaled air at sea level contains roughly 13.5% to 16% oxygen. [ 2 ] The situation is even more wasteful of oxygen when the oxygen fraction of the breathing gas is higher, and in underwater diving, the compression of breathing gas due to depth makes the recirculation of exhaled gas even more desirable, as an even larger proportion of open ...

  5. High altitude breathing apparatus - Wikipedia

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

    Sleepers above 21,500 feet (6,600 m) used "night oxygen" at 1 litre/minute; and with adaptors they could use oxygen from tanks by Drägerwerk the Swiss had left behind in 1952. [37] Both open-circuit and closed-circuit sets iced up; the closed-circuit sets when a new and cold soda-lime canister was inserted.

  6. Oxygen concentrator - Wikipedia

    en.wikipedia.org/wiki/Oxygen_concentrator

    Medical oxygen concentrators are used in hospitals or at home to concentrate oxygen for patients. [8] PSA generators provide a cost-efficient source of oxygen. They are a safer, [9] less expensive, [10] and more convenient alternative to tanks of cryogenic oxygen or pressurised cylinders. They can be used in various industries, including ...

  7. Scott Air-Pak SCBA - Wikipedia

    en.wikipedia.org/wiki/Scott_Air-Pak_SCBA

    The Scott Air-Pak SCBA is an open-circuit, self-contained breathing apparatus designed to meet the National Fire Protection Association (NFPA) Standard 1981. All components, excluding the air cylinder, were designed and manufactured by Scott Safety. Formerly a division of Tyco International, Ltd., Scott Safety was sold to 3M in 2017. [1]