Usage Tips: Very easy to operate, quick testing, and clear results. Provides a simple and afable way to test water quality. Test your drinking water to see its condition. The electronic color tester is an effective tool that visually demonstrates differences between high and low TDS water. Features: - Easy to operate with quick and visible results - Provides a simple method for testing water quality - Helps assess water purity levels so users can observe the condition of drinking water - High precision Testing Methods: - Prepare two transparent cups with 100 to 150 ml of water—one with tap water and one with RO water - Insert the metal rods into each cup, turn the device on, and begin the test - After 30 to 60 seconds, turn off the device and remove the electrolyzer - Caution: Avoid electric shock. Do not touch the rods when the device is plugged in Testing Analysis Results: - Black: Heavy metals - Yellow: Dissolved acids, fluoride, and organic matter - Green: Arsenic, mercury, lead, copper, sodium - Blue: Bacteria, viruses, carcinogens, chemical fertilizers, pesticides - Red: Iron, rust, and bacteria - White: Lead, zinc, mercury, inorganic impurities Specifications: - Plug: EU Plug - Voltage: 220V - Power cord length: 85 cm - Iron bars length: 7 cm - Size: 10.2 x 3.7 cm - Quantity: 1 pc Notes: - 1 cm = 10 mm = 0.39 inch - Please allow 0–3 cm error due to manual measurement - Due to differences in monitor displays, the actual color of the item may vary slightly from the image Package Contents: 1 x Water Quality Tester