Perfect Quality: This water quality tester made of ABS + aluminum and iron is small and lightweight, strong and durable. It has 2 positive and negative electrode rods (one is an iron rod and the other is an aluminum rod) to better test water quality. Fast and Convenient: This water quality electrolyzer provides you with a convenient way to test water quality. Visually demonstrates the difference between high TDS and low TDS water. Ease of Use: With our simple operation, our water quality testers provide you with a quick and convenient way to test water quality. Perfect Replacement: This water contamination tester is a quick and convenient alternative to traditional test paper and liquid test kits. Wide Applications: This water quality tester can be used to test water purity. It is perfect for drinking water, water filtration and purification, hydroponics, aquariums, swimming pools and spas. Specifications: Test Purpose: Turbidity Type: Rapid Water Quality Analyzer Measuring Range: 50-200mg/L Voltage: 220V Plug Standard: EU Plug Line Length: 80cm / 31.5" Product Size: 100 x 40 x 30mm / 3.94 x 15.7 x 1.18" Net Weight: 87g Package Including: 1 x Water Quality Testing Electrolyzer, 2 x Iron Bars, 2 x Aluminum Bars