Review on 🌊 KETOTEK 3-in-1 Digital TDS-EC-Temp Water Tester with ±2% Accuracy for Aquariums, Hydroponics, and RO System - pH Meter Included with 0-14.00 Range and 0.01 Accuracy - Ideal for Testing TDS and pH of Water by George Bell

pH Meter; as described, well calibrated. After 30 days of daily use it was 0.8 and I don't store it in potassium chloride. Not sure if that's the reason, but remember to calibrate often as you would with any Ph. Works well and I'm not disappointed EC/ppm/thermometer; I haven't tested it to make sure it's accurate and there's no way to calibrate it I don't think so. However, from time to time it often jumps between two different displays, for example when checking a solution it jumps from 1230 to 1360 and back about every second. However, sometimes it holds a consistent reading. I also noticed that the temperature shows the usual reading, 69.8, 71.3, 73.1. It rises above and below these temperatures, but never falls in between and is always at its normal level. I'm happy with what I got compared to what I paid for.