The oxygen provided by home and also portable concentrators deserve to be dispensed one of two ways, commonly referred to together either continuous Flow or Pulse circulation delivery. Both of this oxygen delivery methods carry out medical class oxygen directly to the user; however, the dosage is measured in different ways for each an approach of oxygen flow. Listed below we will comparison the 2 oxygen shipment methods and highlight the gadgets that feature them, this will aid you and also your physician determine what form of oxygen distribution is ideal suited for her lifestyle and also oxygen requirements.

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Continuous circulation oxygen flows without interruption native the cannula and only stops as soon as the concentrator is rotate off. These constant flow concentrators will provide the exact same amount of oxygen through the cannula nevertheless of the patients breathing patterns. This type of oxygen delivery allows the circulation rate to be measured at a continuous volume the LPM (liters every minute).

Pulse sheep oxygen concentrators are engineered come dispense oxygen as soon as the device senses inhalation. A “pulse” dose of oxygen, described as a “bolus”, is triggered and also released as soon as a patience inhales v a cannula. Pulse sheep oxygen machines have actually “settings” the indicates just how much oxygen is dispensed each minute. The amount (milliliters) that oxygen obtained by the patience (in a minute) will vary v the manufacturer, the setting, and the patient’s breathing (inhalation) rate. The dimension of the bolus of oxygen dispensed boosts when the settings are increased.

It need to be listed that when the manufacturers designed a setting of 2 on a pulse dose device to almost right 2 LPM on a consistent flow machine, these space NOT the same. Us recommend every patients considering a pulse dose machine both discuss the pros and also cons with their doctor and also test the unit because that efficacy come their particular needs.

Each model of portable oxygen concentrator has actually a “maximum oxygen output” which specifies the maximum amount of oxygen a given an equipment can deliver (regardless of setup or breath rate). Similar to a car’s horsepower, this is a good measure that a machine’s “capacity” to provide medical grade oxygen. The preferably oxygen output for each device is detailed in exhibit 1 below.

Portable Oxygen Concentrator

Setting Range

Oxygen at Setting the 1

Max Setting

Oxygen at Max Setting

Inogen One G4

1 come 3

210 ml/min


630 ml/min

ResMed Mobi

1 to 4

196 ml/min


680 ml/min

Respironics SimplyGo Mini

1 come 5

220 ml/min


1000 ml/min

Caire Freestyle Comfort

1 to 5

210 ml/min


1050 ml/min

Inogen One G3

1 to 5

210 ml/min


1050 ml/min

Inogen One G5

1 to 6

210 ml/min


1260 ml/min

Respironics SimplyGo

1 come 6

240 ml/min


1440 ml/min

SeQual Eclipse 5

1 come 9

192 ml/min


2304 ml/min

Exhibit 1: Portable oxygen concentrators (POC) and also their oxygen calculation in pulse sheep settings and ml/min.Note: The table is because that educational functions only. Oxygen calculation in pulse dose settings is not directly equivalent to continuous liter flow.

Pulse dose delivery was initially designed to enable for smaller sized machines and longer battery life. As such, plenty of smaller portable models just offer pulse sheep settings, when some bigger models feature dual-mode and offer both continuous flow and pulse delivery.

Your Oxygen Prescription

If you require oxygen therapy, your doctor will prescribe friend a provided oxygen circulation rate such together 2 liters every minute. One oxygen flow rate that 2 LPM means the patience will have 2 liters of oxygen flowing right into their nostrils end a duration of 1 minute. Oxygen prescriptions generally run native 1 liter every minute to 10 liters per minute v 70% the those patients gift prescribed 2 liters or less.

It is important to consult through your physician regarding your details oxygen requirements, both in ~ rest and also exertion. Identify the correct therapeutic dose because that both daytime and nighttime use will permit our Oxygen professionals to aid you in selecting the right equipment when renting or to buy your own concentrator. Us recommend patients discuss with their doctors their ability to use a pulse dose versus a consistent flow maker and the recommended setups on every machine.

If you room upgrading to a newer model of a concentrator, climate please examine with your physician whether her oxygen requirements have changed. We extremely suggest purchasing an oxygen concentrator i m sorry can supply oxygen higher than prescribed come accommodate the an altering needs.

Below is a an introduction of assorted home and also portable makers that attribute one or both that the distribution methods available.

Portable Oxygen Concentrator Settings


Exhibit 3: Most famous Home Oxygen Concentrators in 2020 and also their highest possible Liter FlowNote: apologize is presented in the image to display relative size.

Respironics SimplyGo

Most functional unit availableLiter Flow: 0.5 to 2 LPM (pulse dose likewise available)Battery life: as much as 1 hr 36 min (on 1 LPM, v standard battery)Weight: 10 lbs (with battery)Dimensions: 11.5 x 10 x 6 (W x H x D in inches)Maximum oxygen output: 2 LPM (on continuous flow)Best for: solitary unit equipment that is good for all-around daytime and also nighttime use

 SeQual Eclipse 5

Most powerful and flexible unit availableLiter Flow: 0.5 to 3 LPM (pulse dose likewise available)Battery life: as much as 3 hr 40 min (on 1 LPM, v standard battery)Weight: 18.4 lbs (with battery)Dimensions: 12.3 x 19.3 x 7.1 (W x H x D in inches)Maximum oxygen output: 3 LPM (on continuous flow)Best for: Those needing greater flow prices of oxygen or wanting an ext headroom

Inogen At residence 5L

Currently the the smallest stationary oxygen concentratorLiter Flow: 1 to 5 LPMPower Consumption: 275 W MaximumWeight: 18 lbsDimensions: 13 x 16.5 x 7 (W x H x D in inches)Maximum oxygen output: 5 LPMBest for: Low strength consumption and taking along while traveling

Respironics EverFlo Q

Currently has the quietest stationary oxygen concentratorLiter Flow: 0.5 to 5 LPMPower Consumption: 350 W MaximumWeight: 31 lbsDimensions: 15 x 22.8 x 9.5 (W x H x D in inches)Maximum oxygen output: 5 LPMBest for: Those needing low-maintenance and also quiet nights

Caire Companion 5

Easy-to-UseLiter Flow: 0.5 come 5 LPMPower Consumption: 350 W MaximumWeight: 36 lbsDimensions: 12.5 x 21.5 x 13.5 (W x H x D in inches)Maximum oxygen output: 5 LPMBest for: day-to-day routine at home

Invacare Platinum 10

Currently has actually the best user-friendly designLiter Flow: 2 come 10 LPMPower Consumption: 585 W TypicalWeight: 53 lbsDimensions: 18 x 26 x 14 (W x H x D in inches)Maximum oxygen output: 10 LPMBest for: 24-hour oxygen needs

Respironics Millennium M10

Currently has the ideal oxygen liter circulation rangeLiter Flow: 1 come 10 LPMPower Consumption: 600 W AverageWeight: 53 lbsDimensions: 13.3 x 26.8 x 18.9 (W x H x D in inches)Maximum oxygen output: 10 LPMBest for: dependable operation and safety alerts

AirSep NewLife strongness 10

The finest unit come run through a nebulizer or usage in conjunction with a hyperbaric chamberLiter Flow: 2 come 10 LPMPower Consumption: 600 WWeight: 58 lbsDimensions: 16.5 x 27.5 x 14.5 (W x H x D in inches)Maximum oxygen output: 10 LPMBest for: High-pressure applications at 20 psi and usage with up to 200 feet lengthy tubing

Discontinued Oxygen Concentrators

Advancement in modern technology has benefitted us with smaller, lighter, quieter, and much more powerful oxygen concentrators, make the old people obsolete. In this section, us state several of the useless oxygen concentrators precious a mention. If you have been utilizing these concentrators and want to upgrade to the next-gen, then discover the equivalent oxygen concentrator in the sections above.

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Portable Oxygen Concentrators

Setting range 1 – 3 – AirSep Focus and also AirSep Freestyle

Setting selection 1 – 4 – Lifechoice Activox by Inova Labs

Setting selection 1 – 5 – Inogen One G2, AirSep Freestyle 5, and also Invacare XPO2

Setting variety 1 – 6 – Respironics EverGo and iGo by DeVilbiss

Home Oxygen Concentrators

2 Liter per Minute – Respironics SimplyFlo

5 Liter every Minute – Invacare Perfecto and AirSep Visionaire

Disclaimer: info on this web page is because that educational functions only. For much more information, talk to your medical professional or primary treatment provider.