Ⅰ. Features: Ⅱ. Electric Temperature & Conductivity Meter features updated technology. Five different measurement needs can be fulfilled by one digital water quality tester. It is convenient and saves time and money, serving as a helpful kit for life. Ⅲ. Just stick it in about 1 inch of water to get the reading instantly. It's compact and doesn't need any maintenance. The TDS water tester is a rugged model. Ⅳ. This Meter has Three Points Calibration with Automatic buffer identification. Ⅴ. Economy model ideal for end-users. It is efficient and accurate due to its advanced microprocessor technology. Ⅵ. Water quality test meter is manufactured under extra high standards and of quality. Thus we have confidence in our water test meter. Ⅶ. Specifications: Ⅷ. Material: ABS Ⅸ. Color: White+Blue Ⅹ. Size: 183*37*37mm(7.2*1.5*1.5in)/90g(3.2oz) Ⅺ. Accuracy: 0.01-5.00%(0.1%)5.01-25.00%(1%) Ⅻ. TDS Range: 0-1000ppm XIII. EC Range: 0-10000US/cm XIV. PH Range: 0.01-14.00pH XV. Salt Range: 0.00-25.00 XVI. Sea Water: 10.1-200.0ppt XVII. 1. Pull out the electrode protection cover before use. XVIII. 2. Press the switch to turn on the power, then place the electrode in the tester. XIX. 3. When the value is stable, press the button to fix the measured value, then take out the meter and read the measured value. XX. 4. After use, press the power off button to clean the meter and insert the electrode into the electrode protective cover. XXI. Note: XXII. Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. XXIII. Due to the difference between different monitors, the picture may not reflect the actual color of the item. XXIV. Package includes: XXV. 1 Piece Water Quality Tester. XXVI. 3 Pieces Button Battery.