Very Easy to operate, quick testing, obvious results. Simplest and most affordable way to test water quality. Test your own drinking water and observe its condition. The electronic color tester is a visual tool that demonstrates differences between high TDS and low TDS water. Features: - Easy to operate with fast and visible results - Provides a simple method for testing water quality - Helps assess the purity level of water; users can observe the condition of their drinking water - High precision design Testing Method: 1. Prepare two transparent cups with 100 to 150 ml of water each – one with tap water and one with RO water. 2. Insert the metal rods into both cups, turn the device on, and begin the test. 3. After 30 to 60 seconds, turn off the device and remove the electrolyzer. Caution: Avoid electric shock during use. Do not touch the rods when the device is plugged in. Testing Analysis Indications: - Black: Indicates presence of heavy metals - Yellow: Suggests dissolved acids, fluoride, and organic matter - Green: May indicate arsenic, mercury, lead, copper, sodium - Blue: Suggests bacteria, viruses, carcinogens, chemical fertilizers, pesticides - Red: Indicates iron, rust, and bacteria - White: May indicate lead, zinc, mercury, inorganic impurities Specifications: - Plug Type: EU Plug - Voltage: 220V - Power Cord Length: 85 cm - Iron Bars Length: 7 cm - Device Size: 10.2 x 3.7 cm - Quantity: 1 Piece Note: - Measurement tolerance: 0–3 cm may vary due to manual measurement. - Product color may slightly differ due to monitor settings. - No retail packaging included Package Contents: 1 x Water Quality Testing Device