
I use it to check the concentration of a water based coolant on a CNC router. I've been using it for several years now with no complaints. Calibration is complete and that's it, no rocket science. These things are pretty basic, so there's no reason to overpay for what some people do.

Accurate And Versatile Digital PH Meters For Food, Brewing, Hydroponics, Pools And More!
7 Review

π― Honey Refractometer with Automatic Temperature Compensation (ATC) - Tiaoyeer Moisture, Brix, and Baume Refractometer for Honey, 58-90% Brix Scale Range - Honey Moisture Tester
31 Review

Portable digital multimeter with sound continuity and thermocouple (electric tester) LTX DT-838
7 Review

Digital PH Meter Tester - Tiaoyeer Water Quality Tester With ATC, 0.01PH High Accuracy, 0.00-14.00 Measurement Range, 0.01 Resolution For Drinking Water, Aquarium, Swimming Pools, Hydroponic
8 Review