1. Ready to test the water, take two 100-150 ml white glasses, a glass of still water, another glass of water and on the table. 2. To test, read that the electrolyzer rests on the glass and connect the 220V power supply. 3. Inspection: Press the ON button to start the test.Typical test time is 30 seconds. 4. Do not hold the electrodes with your hands after turning them on;do not immerse your fingers in the test water;to avoid product leaks. 5. The metal bars of the product are divided into two materials (aluminum*2, iron*2).Aluminum bars look more clear and white, and the mounting position has certain requirements, so it cannot be random.Otherwise, the product will have no effect.As the picture shows, the red circle is used to install the aluminum bar and the red arrow is used to install the iron bar.