Features: 100% brand new and high quality When you need to test the water, you can clearly see the actual situation of daily drinking water. How to use: 1. Prepare to test the water - take two white glasses with a capacity of 100-150ml, take a glass of water, and the RO machine takes another glass of water and put it on the table. 2. Ready to test - electrolyser laying flat on glass, 220 volt power plug. 3. Test - Electrolyte power button pressed ON (open) position to start testing.4. Typical test time is 30 seconds. Finally, press the power switch to the OFF position and finally remove the electrolyzer. Test analysis results: Yellow: Dissolved Sanso, silicon compounds, organic minerals, molybdenum, silicon, fluorides, other organics Green: Arsenic (Arsenic), Mercury, Lead, Copper, Sodium Blue: Bacteria, hands should not touch the electrodes when electrified; do not insert fingers into the test water; do not let children play with the electrolytic cell. When finished, clean the electrode with a dry cloth and keep it in a safe place. The tester cannot be used to evaluate the quality of mineral water, because when using mineral water to measure, some pollutants such as mineral water may also have some chemical reactions in the water, which will give users misjudgment. Do not use metal containers for testing. Product attribute: monitor Type: Analog DIY Supplies: Pipe with or without backlight: No Model: No Specification: Main Color: Black Net Weight: 153g Package Included: 1 x Electrolyzed Water Set