test in 5 Seconds know water quality, Accuracy, Faster. This set Combo of TDS PH EC Temperature. Also it have Best Price, Trustable Quality, all make it be your FIRST water quality Test.
PH meter resolution is 0.01pH, accuracy ±0.01pH.TDS meter rangs 0~9999ppm, Conductivity 0~9999 us/cm, accuracy ±2%.
PH pen have AUTO CALIBRATION function, not need any kind of screwdrivers to calibrate the pH pen tester.TDS pen have Lock & auto shut off function.
Handheld design and small size make it convenient for you to carry it everywhere you want. Small size but Suitable for testing pH balance of drinking water, pool, aquarium, RO system, Spa, or hydroponics.
If the Meter would not calibrate, thenplease clean the electrode with distilled water, then blot the water that covered on the electrode by filter paper.