Check the water quality at the touch of a button: Quickly and easily measure the pH value of swimming pool, whirlpool, garden pond, aquarium or even drinking water, food and much more. Always correct: With the powder for making test liquids and the automatic calibration function, you calibrate your device again and again easily and precisely. Temperature-independent measurement: Thanks to the ATC function with automatic temperature compensation, you can measure everything accurately in the range from 0 to 50 °C. Also ideal for taking along: In the sturdy storage box, you can easily take your water tester with you - e.g. when traveling. In addition, everything is always well and safely stowed away. Ideal for testing the water quality of pool, garden pond, aquarium, drinking water, food and much more. Measuring range: pH 0 - 14, accuracy: +/- 0.01. Automatic calibration with the help of 2 calibration solutions: pH 4.01 / 6.86. ATC function: temperature-independent measurement through automatic temperature compensation in the range from 0 to 50 °C. Practical plastic storage box. Power supply: 2 button cells type LR44 (included).