Water Quality Tester, 4-in-1 pH Meter and TDS&EC Temperature Meter, pH Meter with LCD Screen, High Precision Resolution 0.01, for Drinking Water, Swimming Pools, Aquariums

【High Precision】The measurement range is 0 to 999 ppm, with a resolution of 1 ppm. Conductivity: 0 - 9999 µS/cm, accuracy: ±2%. The backlit LCD screen provides fast and reliable EC and TDS readings.

【TDS/EC Meter】A very complete kit for checking the quality of your water, whether it comes from a tap, hot tub, homebrew, indoor soil, aquarium, hydroponic system, or swimming pool.

Furthermore, TDS tester pens are small, lightweight, and easy to carry when you're out and about!

【Easy to Use】 Simply turn on the TDS meter and gently stir the water, press the "HOLD" button, and the stabilized readings will automatically lock onto the LCD screen within 10 to 30 seconds. The meter will automatically shut off to save battery power if not used for more than 5 minutes.

【Mode Switching】 You can switch between TDS and EC by clicking the "SHIFT" button. Double-press and hold the "SHIFT" button to switch between Celsius and Fahrenheit. The water quality pen has a hold function that stores measured values for easy reading and recording. 【Wide Application】You will receive: 1 TDS/EC meter tester, 1 battery, and instructions. Suitable for home and laboratory water quality testing, including drinking water, plating baths, aquarium water, swimming pool water, well water, deep diving, aquaculture, food processing, etc.