【Portable】The smallest and lightest TDS meter on the market. Efficient and accurate thanks to its advanced microprocessor technology. 【Auto Power Off】Turn off the player after 10 minutes of non-use to save battery power. 【Automatic Calibration】This pH tester has a three-point automatic calibration function. After power on, press and hold “CAL” key and put it into the standard solution for calibration. Automatic compensation function temperature. 【Wide Use】Suitable for water source, soilless culture, aquarium, hydroponics, laboratory, spa, swimming pool and other water systems.
