Digital TDS test pen (Total Dissolved Solids) for drinking water, pools and aquariums: LED screen, portable, high accuracy, waterproof.

Purpose: Helps you drink pure and safe water, thus protecting your health.
Features: The digital tester has an ATC function, so the measurement data is not affected by the water temperature. The meter takes measurements in 5 seconds, has an accuracy of ±2%, and a measuring range of 0 to 9990 ppm.
Easy to use: The test pen is small, lightweight, and easy to carry. It is equipped with an automatic shut-off function, which simplifies its use.
Technical specifications: Measuring range: 0–9990 mg/l (ppm); Resolution: 1 ppm, Accuracy: ± 2% (FS)
Power supply: Battery (included)
Automatic temperature compensation: The displayed value can be automatically converted to a value at 25°C.
Operating temperature: 0–50°C, Relative ambient temperature: < 85%
Versatile applications: Suitable for water purifiers and filters, quality control of food (vegetables, fruit) and beverages, swimming pools and spas, aquariums and hydroponics.