Oxygen - I am on continuous flow 4-6. Other than tanks, is there a portable concentrator I could?

... use. I would like to take a trip sometime or spend the night at my daughter. Is there a concentrator I could get instead of those heavy tanks.

... use. I would like to take a trip sometime or spend the night at my daughter. Is there a concentrator I could get instead of those heavy tanks.

or:... use. I would like to take a trip sometime or spend the night at my daughter. Is there a concentrator I could get instead of those heavy tanks.

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