TDS Meter - Drinking Water Quality Tester - High Accuracy - Measuring Range: 0-9999 ppm - Digital Purity Tester for Pools, Spas, Aquariums

【Wide Use】: The TDS tester can be widely used in water purifiers and filters, food (vegetables, fruits) and beverage quality control, swimming pools and spas, aquariums, hydroponics, etc. 【Three Test Modes】: The measuring principle of the TDS meter is to measure the conductivity of water, which indirectly reflects the TDS value. With the hold function, you can record the measurement results, read and save. Three test modes: ON/OFF is the switch button, HOLD is the lock button, and TEMP is the mode key, which can be adjusted according to personal needs. 【Easy to Use】: The TDS tester can detect some impurities in water, such as soluble salts, ionic organic compounds, heavy metal ions, etc., which provides great convenience for you and your family to get cleaner water. No matter where you are, traveling/playing/shopping, check the TDS value of the water at any time with a measurement accuracy of ±2%. 【Auto-off Function】: If no operation is performed for 5 minutes, the TDS tester will automatically turn off to save power. To prevent the battery from being empty. 【Measuring Range】: 0-9990ppm, resolution is 1ppm. From 1000 to 9990 ppm, the resolution is 10 ppm. Note: The TDS pen cannot be used to measure high-temperature water (such as hot water) or to measure water with strong shaking.