Description: Water quality test pen, fast water quality analyzer, suitable for household, industrial, water plants, laboratories, etc. Precision probe water quality measurement is more accurate. How to use: 1. Press the switch key 2. Adjust the function switch key to the required value 3. Put the test pen into the water 4. Read after the value is stable Test items: TDS value, conductivity, water temperature (°C/°F). The TDS value represents the total soluble solid content in the water, which can reflect the water quality to a certain extent. Generally, the lower the TDS value, the purer the water quality. Specification: Material: Main body plastic, LCD screen, metal probe. Type: Water Quality Fast Analyzer Measuring range: 0-9999PPM Measurement accuracy: ±2 Power supply voltage: 2x1.5V Resolution: 1PPM Error range: ±2%F.S Temperature range: 0-80°C Number of batteries: 2pcs 1.5V AG5 button battery (included) Detection speed: within 3s Size Chart: 147x16mm/5.79x0.63inch Package Includes: 1x TDS Water Quality Test Pen Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful on-line shopping!