PH Meter Digital for Swimming Pool Drinking Water Aquariums High Precision Automatic Calibration PH/TDS/EC/Temperature Conductivity Meter <p>【Portable】The smallest and lightest TDS meter on the market. Efficient and accurate thanks to its advanced microprocessor technology.</p> <p>【Auto Shutoff】 Turn off the meter after 10 minutes of non-use to save battery life.</p> <p>【Auto Calibration】This pH tester has a three-point automatic calibration function. After powering on, press and hold the CAL button and place it in the standard solution for calibration. Automatic temperature compensation function.</p> <p>【Wide Use】 Suitable for water source, soilless culture, aquarium, hydroponics, laboratory, spa, swimming pool and other water systems.</p> Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-dadangjia