Best for Soil Quality Management - The soil tester is very durable and convenient, and can achieve correct and stable time-frame measurement of the project. 13x200mm thick electrode - The upgraded electrode is more accurate and durable, and uses high-quality resin and metal storage materials, which are easy to clean. It can be inserted into 8-20cm soils and has a wide range of applications. With backlight function: the display layout is neat, the lighting is at the top of the screen, the pH of the nutrient solution and EC are on the same line., Weight: 0.771617917 pounds, Manufacturer: Rtxbvg