ResOneHigh Flow Liter Meter Pen: Measure Oxygen Flow Rates 2-15 LPM - Compact Oxygen Flow Meter for Quick, Precise Flow Checks

As an oxygen user, it's a simple, handy and convenient way to check the flow. Lets me compare the flow at the tube end with the numbers on the concentrator.

It does exactly what it is intended to do. Seems very accurate.

Very handy to have when following up on my patients to make sure their equipment is functioning properly.

Uaed one kust like it in the hospital for guick checks

Great to know what my medical equipment is doing. Easy to use and accurate. Too bad it only goes down to 2 LPM but it’s still a good addition. Excellent price.

I like this fairly cheap tool to check the oxygen flow that I'm getting. You have to be aware that it checks only the flow pressure, not quality of Oxygen coming out.I use it because sometimes I'm concerned if there is a crack in the tubing, or bad seal and letting the oxygen leak out giving me an incorrect amount of oxygen.I have to report that it is dead-on for accuracy. The ball is the same as the O2 concentrator level reading in the hallway and my nose canula in my bedroom.Glass construction and heavy metal ball. Well made.

I was feeling that my oxygen concentrator wasn't always putting out the right amount of oxygen. This actually showed m that it is. Very easy to use.

Easy to use and accurate. Readings all matched my regulator settings. No more guessing whether a hose is bad or good!