Welcome to Robinlu's store, it is my great honor to serve for you, waiting for your orders and contact. Have a nice day! Features: Multipurpose TDS Pen is ideal for all water purification applications, drinking water, water filtration and purification, hydroponics (test your nutrients), colloidal silver, aquariums, pools and spas, and more. (The ppm pen does not test for biological contaminants.) Professional TDS, EC and Temperature Pen with big backlit LCD for easier reading, and auto-lock function for easier use. Specifications: Measuring Range: TDS: 0 - 9990 ppm (parts per million) Conductivity: 0 - 9990 µs/cm Degrees Celsius: 0.1 - 50.0°C Fahrenheit: 32.0 - 122.0°F Accuracy: ± 2% F.S Size:6.29 x 1.14 x 0.59 inches (160x29x15mm) How to Use: 1. Remove the protective cap 2. Turn the meter on,immerse the electrode into the solution to be tested. 3. Wait for the reading to stabilize,press the HOLD button, take out to read the data. 4. Turn off the meter,clean the electrode with distilled water. Tips: 1. Please no not immerse the tester into the solution over the ""warning line"", to avoid damage to the circuit board. 2. This is an item for professional use, please not disasemble the meter. 3. It usually needs 30 seconds to make the reading stable. 4. Avoid direct sunlight and heat. Package Contents: 1 x TDS Meter Digital Water Tester 1 x PU Leather Cover 1 x User Instruction
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