Very Easy to operate, quick testing, obvious results. Simplest and most af able way to test water quality. Test your drinking water at home with ease. The electronic color tester is a practical tool that visually demonstrates differences in water samples. Features: - Easy to operate and delivers quick, visible results - Provides a simple method for testing water quality - Helps assess the purity level of 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 electrodes into both cups. 3. Turn the device on and begin the test. After 30 to 60 seconds, turn it off and remove the electrodes. Caution: Avoid electric shock during use. Do not touch the electrodes when the device is plugged in. Possible Result Colors and Their Indications: - Black: Indicates presence of heavy metals - Yellow: Suggests dissolved acids, fluoride, or organic matter - Green: May indicate arsenic, mercury, lead, copper, or sodium - Blue: May suggest bacteria, viruses, carcinogens, fertilizers, or pesticides - Red: May indicate iron, rust, or bacteria - White: May indicate lead, zinc, mercury, or inorganic impurities Specifications: - Plug Type: EU Plug - Voltage: 220V - Power Cord Length: 85 cm - Electrode Length: 7 cm - Device Size: 10.2 x 3.7 cm - Quantity: 1 Piece Note: - 1 cm = 10 mm = 0.39 inch - Please allow 0–3 cm variation due to manual measurement. - Color may vary slightly due to monitor settings. - No retail packaging included Package Contents: 1 x Water Quality Testing Device