Gegong Portable Bio Mineral Tester Tds Water Quality Test Energy Conductive Pen For Fish Tank Aquarium

1Put the pen into the solution under test can identify the difference between pure water and energy water. Light energy is mineral water, no light is pure water. 2Tester can check the water for minerals. 3Lightweight, easy to carry and use. 4Can be replaceed battery, durable for long time use. 5Suitable for fish tank, aquarium. Item type: Fish Tank Mineral Tester Condition: 100% brand newMaterial:ABSWeight: Approx. 14gColor: As picture shownOperation Step1. Remove the cap.2. Put the pen into the solution under test can identify the difference between pure water and energy water. Light energy is mineral water, no light is pure water.3. After use,clean the probe. 1 xFish Tank Mineral Tester