2 in 1 Set & Quick MeasurementThe set of pH meter and TDS meter. It only takes 5 seconds to know the pH, quality, EC and temperature of the water. High accuracyThe numbers of the pH range from 1.00 to 14:00, while the numbers of digital EC and TDS meter from 0 to 19990 ppm. And this LCD conductivity meter has the accuracy of 0.1. Immerse the item in the liquid about 4 seconds, then you will know the quality of the liquid by the numerical values. Auto CalibrationThe pH tester is able to self-calibrate at three points (accuracy is 0.1ph ). No adjustment needed before use. It is very convenient to use. Color Screen Display Different from other TDS meters, this TDS meter adopts backlight, which makes data display much clearer. You can see the data easily even in a dark environment. In addition, the pH meter also has a color display function. Although it has a specific value display, it can also indicate the acid-base level of water quality through four colors: red, orange, green and blue. Application Multiple Homtiky pH meter could be widely used: testing pH value and quality of drinking water, aquariums, swimming pools, spas and wine, tap water, well water, sea water, water amniotic, breakthrough, aquaculture, food processing, saliva, enzyme, chemical experiment, ionized water, human urine pH value and so on. It helps you distinguish water quality in daily life. Note: The data is all measured manually, please allow 1-3cm error, due to the light and display difference , there will be a certain color difference, the actual object received shall prevail.