VANTAKOOL Digital, 0.01 High Accuracy Pocket Size Meter/PH 0-14.0 Measuring Range, Quality Tester for Household Drinking Water, Swimming Pools, Aquariums, AAA1

The meter arrived and is super easy to use but not as accurate as i hoped. I have yet to re-calibrate it but it was supposed to be calibrated from the factory and it is off at least .3. For a pool this can be a big difference if you have PH swings. Also not super sure yet, i pull a sample and test and it reads 7.9, dry it off and test again and get 8.2 and a third test shows 7.7.

It was very slow to get a reading and readings would vary in the same glass of water. I don’t know why, maybe I was doing something wrong. I had it for a couple of weeks and the digital readout locked up on 0 and stayed that way. I pulled the batteries out for about ten minutes hoping it would reset but that didn’t work. I threw it in the trash. Hopefully others are having better luck with theirs.

Don't buy this. Can't understand directions. Tried calibrating it and it seemed to be correct but readings aren't even close. Had to go back to chemical testing to correct the pH levels.

Horrible,will only read 0I’ve used many brands from amazon with success, from expensive to cheap but this is the worst!Great brand that works is Diliss, not this thing

My boyfriend has not used a digital PH tester and was used the old school way. He was AMAZED at how easy and quick this one was. He's happy, I'm happy oh and most importantly the FISHIES are Happy and alive mostly thanks to this PH tester.

Trash! But something a little more expensive Liz recived this and it already was saying Err when trying to first calibrate it. Then it completely stopped working. Do not buy!

Ordered a couple of these. One lasted 3 days past the 30 day return window. The other one is now .50 off and doesn’t calibrate properly. So my assessment is do not buy this brand. There are Junk.

This is the easiest way I've found for checking the water pH in my hydroponic container. Wish I'd bought it sooner