Features 1、High‑quality probe, high sensitivity, anti‑rust, accurate measurement. 2、Easy to use, as long as it is placed in water, the TDS value of the water will be displayed immediately. 3、The whole adopts arc design, which is more comfortable to hold and easy to operate. 4、Suitable for hospitals, households, commercials, swimming pools, water plant laboratories, and aquaculture. 5、Stylish design, high‑definition display, clear numbers and easy to read values. Specification Item Type: TDS Tester Material: ABS Model: M1 Accuracy: ±2% Range: 0-99990ppm (when the measured value exceeds 999ppm, the display value x 10) Applicable Industries: Hospitals, households, commercials, swimming pools, disease control centers, water plant laboratories, aquaculture Battery: 1 x 3V CR2032 button battery (not included) Package List 1 x TDS Tester(Battery Not Included) 1 x Instruction Manual