Features: The Semlos Digital TDS EC meter is used for testing the quality purity of filter water,to check for hardness (1grain=17ppm),and make sure you always drink pure water. Can be used in : Water purifiers and filters, food(vegetable , fruit)&drink quality monitoring, pools and spas, aquarium, hydroponics. Auto-off function: Auto Shut-off after 5 minutes of non-usage to conserve power. Hold function: Makes it easy to read and record, lock the reading when out of test solution. 4 Display modes: press SHIFT button to change. Automatic temperature compensation. Measurement Range EC:0-9990us/cm; TDS:0-9990ppm; Dearees Celsius: 0.1-80.0 Celsius; Fahrenheut:32.0-176.0 Accuracy: 2% How to Use 1. Remove the protective cap from the tester. 2. Press the "ON"button, put the electrode into the test solution. 3. Wait for 30 seconds, allow the reading to stabilise. 4. press down the "HOLD" button, take out the meter to view the reading. 5. After each use, turn off the meter and wipe clean the electrode. Note: 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 content: 1x TDS EC Meter 1x PU Leather Cover 1x User Instruction
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