OXYGEN Analyzer by FORENSICS | 0%-100% with 0.1% resolution | Scuba, Nitrox, Divers | Water Resistant Case |

Ok so here's the deal: I am on o2 therapy. Wanted to actually test the large concentrators vs the tanks vs the travel ones I have decided to purchase because let's be honest even pacing through my insurance to rent theirs stiff is a scam where the sales guy is literally making a living off me renting them each month. Everyone needs a job but I don't consider myself an employer. Just my personal 411. So this handy little device seems to be pretty accurate when I measure my sats while using it. I have way more I could write but i will wait to see if anyone Actually wants me to go into detail here before I literally fill a page with useful(less to some) info and stats. So in order not to waste anyone's time,, I will be happy to update when I see a notification that this review is marked as helpful. If not, ill save my useless(full to some) info for elsewhere.

Fino

I so wanted this meter to work since it is fairly inexpensive and comes with a nice case but I think the sensor was bad and I can't trust it. I received the meter and the batteries were dead as many of the other reviews have noted. I can't believe they haven't fixed this simple flaw yet! I put 3 fresh AAA batteries in and turned it on and calibrated as directed. The reading was 21.4% before I calibrated and 21.4% after I calibrated (should be closer to 20.9%). I had a feeling there was something wrong with the meter. I contacted Forensics technical support via email and got no response after 4 days. Fortunately I took it over to a local dive shop and tried it on a tank of nitrox with a known oxygen content of 32%. Put the meter on and waited about 20-25 seconds before the read out moved. It went up to about 26% but no further. The shop worker's meter only took about 5 seconds to register ~ 32%. I sent it back and purchased a different brand before I went diving.

Very useful to confirm your tanks, especially if they regularly on boat. I used batteries that came with it & they died before first use. I thought machine died but thankfully was just the batteries.

Great product and great company. Their ability to produce highly accurate gas detectors for affordable prices has helped my clients multiple times. They also offer a calibration service for most of their products (if not all. I assume they will do any of them.)

Accurate and easy to use. Was testing an extreme Live O2 oxygen maker that varies from 10-85% oxygen percentage levels. This worked perfect to test and results as expected confirming my generator functioning correctly.

Worked fine when first purchased. Quick and easy to analyze mix. Used on two dive trips then put away for 6 months with batteries removed. Then it would not calibrate to 20.9% . Used new batteries still not working properly. I think the sensor may have died.Contacted manufacturer through their website e mail. Sarah got back to me within one day with a recommendation to fix issue. When that didn't work she immediately arranged for a replacement unit, which I received within a week. A good product but even better : Great customer service!!

Divers, the unit I received was off by 3 to 4 %.I used it to check a tank, which had been ordered to be filled to EAN32.I turned on the analyzer, calibrated it, and gave it plenty of time to analyze and stabilize the reading. It read the tank at 29.1. Turn it on and off, recalibrated, and read it again. Same result.Then I analyzed the same tank with two other analyzers from different manufacturers. Both read 33.0.That is a huge difference when calculating maximum safe depth and repetitive dive limits. From a safety perspective, the problem with the low reading low is narcosis risk when exceeding the safe depth. For repetitive dive limits, an erroneously low reading does not give you the full advantage of the nitrox blend you are using.My bigger concern, of course, is safety, and I see that this analyzer doesn't provide the accurate information I need to help me stay safe.Fortunately, I tested the analyzer soon after purchasing, so I am able to return it for a refund.