1、Convenient To Use: The water tester is small in size and light in weight, which makes it easy to carry and use without frequent adjustments. 2、High Accurte Design: TDS meter measurement data is fast and easy, and the measurement value is trustworthy. 3、Exquisite Workmanship: TDS tester adopts better microcomputer technology and is specially designed for on site rapid measurement. 4、Wide Range Of Use: LCD TDS tester with luminous display, suitable for providing reliable measurement results in harsh environments. 5、Good Performance: The hydroponic aquaculture analysis instrument is stable and high, with a measurement accuracy of ±2% F.S. 1 x TDS Meter(Battery Not Included)1 x Modification Tool1 x Manual 1 x Plastic Box Item Type: TDS MeterMaterial: ABSWeight: Approx. 140g / 4.9ozProduct Size: Approx. 16.6x5x 2.8cm / 6.5x 2.0x 1.1in (including the thickness of the back battery shell)Battery: 4 x LR44 1.5V batteries (Delivery without batteries)Range: Lowest 0~1999ppm; highest 0~ 19.99PPTResolution: TDS: minimum 1ppm; maximum 0.01PPTAccuracy: ±2%F.STemperature Compensation: 0℃~50℃Working Temperature: 0℃~50℃Display Mode: Large screen 4 digit LCD digital displayProbe Type: Graphite electrode