Oxygen Concentrator

An oxygen concentrator is a device that concentrates the oxygen from a gas supply (typically ambient air) by selectively removing nitrogen to supply an oxygen-enriched product gas stream.

Two methods in common use are pressure swing adsorption and membrane gas separation.

Pressure swing adsorption
These oxygen concentrators utilize a molecular sieve to adsorb gases and operate on the principle of rapid pressure swing adsorption of atmospheric nitrogen onto zeolite minerals at high pressure. This type of adsorption system is therefore functionally a nitrogen scrubber leaving the other atmospheric gases to pass through, leaving oxygen as the primary gas remaining.

Inogen One G4                              Inogen One G5                       Caire Comfort

  • 3 flow settings                                    6 flow settings                                 5 flow settings
  • Only 2.8 lbs.                                        Only 4.7 lbs.                                     Only 5 lbs.
  • 5-hour battery                                   12-hour battery                              10-hour battery


SimplyGo Mini                                     GCE Zen-O                    Philips SimplyGo

  • 5 flow settings                                         Up to 2 liters                                   Up to 2 liters
  • Only 5 lbs.                                                 Up to 6 pulse                                   Up to 6 pulse
  • 9-hour battery                                         Only 10 lbs.                                      Only 10 lbs.
  •                                                                        4-hour battery                                3-hour battery
  •                                                                        Charges in car                                 Charges in car7


          Caire Eclipse                            Inogen At Home

  • Up to 3 liters                                             5 liter flow
  • UP to 9 pulse                                             Only 18 lbs.
  • Only 18 lbs.                                                Extremely quiet
  • 4-hour battery                                          Energy efficient

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