Review on 🌊 KETOTEK Digital PH Meter: Accurate 0.01 PH Pen Tester for Water, Hydroponics, Aquariums & More by Kadarius Gentry

This PH meter was broken right out of the box. I immediately followed the instructions to rinse and dry the sensor head and calibrate the meter using the supplied calibration powders/solutions. The calibration package labeled "6.5" didn't bump the counter to 6.5 - it's calibrated to 4.1. The calibration package marked "4.1" simply made the counter blink continuously even after tens of minutes of waiting. I immediately rinsed everything and repackaged it for return. This product wasted my time. I hate this kind of low quality junk - I'm sure some buyers should have gotten a working meter but obviously with junk this cheap there is no quality control.