PH Meter, Digital 4-in-1 PH ORP H2 Temp Meter, PPB/PPM Meter with ATC, 0.01 Resolution High Accuracy PH Tester for Drinking Water

The main thing when measuring your H2 levels make sure your sample contains hydrogen gas! I used it to test a newly purchased V8 water hydrogenator, but it couldn't generate any hydrogen in a distilled water, you need slight amounts of minerals for the electrolysis to happen, but once tested with the filtered tap water (PH 7.5) it showed me 1300 ppb, that actually is exactly what the spec of this hydrogenator said it would generate. it takes about 10 to 15 seconds to start showing hydrogen level, so be patient. Also give it a chance to settle down on a value. Overall this is a pretty good value and quality little tool to help you test your water!

Ppm doesn't work so that is useless to me i needed ppm to be read and this didn't even do that you're better off buying the cheap square ph and ppm combo

I bought this to measure the amount of molecular hydrogen in water. It's accurate, easy to use, and great value for money.

I got this primarily for checking hydrogen levels in a few different hydrogen water bottles I tried, suspecting that some had prices and hydrolysis times that were too good to be true. I did *not* know that you have to leave it in for 2-3 min before it will even start to register hydrogen levels (I found that somewhere else), so the first times I tried to use it, I wasn't sure if *all* the bottles were faulty, or the meter was the problem. Once I left it in longer, tho, it *did* start registering H2. However, but very *slowly* climbed up. And here's the thing.... Hydrogen rich water loses its hydrogen very quickly. I mean, you basically have to slug it, as soon as you take the cap off your bottle. By 5 min after the cap is off the bottle, it has already dropped by, like, half, and is continuing to lose H2. Well, the meter is so slow that it still hasn't caught up to the actual H2 level before the levels have gone substantially down. So... Altho I was able to validate that one of the bottles did indeed produce H2 (at least 2000 ppb), I could not validate that it produced anywhere near the levels claimed the the bottle producer (5000-10000 ppb).

I have several pH meters like this. They are almost disposable at this point. I like to check one against another and when one isn't reading the same even after a cal I just toss it and move on.

Easy to use. Works as advertised.

PROS: None.CONS: Most of the senses are completely off! For example, here it's attempting to read the water temperature, I know for a fact the water is 40°F (5°C), but this device constantly reports it as 70°F (21°C). Even after multiple calibrations, the temperature is off by 15° at best. This is absolutely unacceptable! On a digital device, if it's off by a single degree then it is not a trustworthy device.That was just the temperature, it cannot read pH levels, H2 levels or ORP levels correctly either. Even the pH levels are off by two points. When pH levels are off by one point, it's dangerous! This company needs to be investigated and this product needs to be removed from the listing immediately.BOTTOM LINE: Do not buy!

The media could not be loaded. This device appears to accurately measure hydrogen, pH, and ORP. It's affordable and confirmed that my hydroxy (Browns Gas) generator works. Thank you!