Review on 🔍 Enhance Accuracy and Quality with Allprettyall Digital Tester by Jared Winebrenner

I bought this unit mainly based on positive reviews to check the pH of the pool water. Assuming it has been pre-calibrated, but also has 3 levels of calibration (using distilled water and following instructions). I tested the water and then went to the pool shop and asked them to test it. There was a difference of 1.5 PH. So I went to another pool shop to have it tested (same result). Apparently the PH readers weren't working. So I tried to do a calibration of 4 6.86 and 9. - 3 cans, distilled water, hold calibrate button - level 3 doesn't work - never calibrates. So I had to send it back. The concept is good but I'll just go with the pool shop, didn't work and didn't calibrate. Maybe it was a bad block - but I won't risk it again.