VERSATILE APPLICATIONS: Our pH meter for checking the pH of various liquids. TDS water hardness meters and CE testers are designed for testing the quality of liquids such as drinking water, aquariums, swimming pool, swimming pool, spas, pond, bath water, well water, etc., which can ensure the water safety of daily life. A professional gauge for measuring conductivity, water hardness and temperature of all liquids. EASY TO USE AND WIDELY DISTRIBUTED: pH meters and TDS have sensitive electrode sensors , just immerse it in the solution for 4 seconds to closely check the water quality. It is a good tool in a wide variety of applications: for example aquarium, pond, fishing industry, swimming pool, spa, laboratory, chemical industry, hydroponics, agriculture, etc. HIGH PRECISION FUNCTION ET ATC: The pH meter numbers range from 0.00 to 14.00 (PH), while the EC and TDS digital meter numbers range from 0 to 19,990 ppm. pH resolution is 0.01pH, accuracy 0.05pH. TDS: 0~9990ppm, conductivity: 0~9990us/cm, accuracy: 2%. Our meters are equipped with reliable automatic temperature compensation (ATC) to ensure accurate readings at different temperatures. PORTABLE AND UPDATED LCD DISPLAY: Thanks to its compact size, you can easily take with you everywhere. pH meters and digital TDS meters are equipped with an illuminated display, with which you can read the water quality results more accurately. It is easy to use even in dark environments. Both have an auto-shutoff feature that extends battery life. BEST GIFT AND IDEAL CHOICE: This set contains 1 pH meter + 1 TDS EC thermometer.