Best for soil quality management - The soil tester is highly and convenient, and can achieve long-term stable and correct project measurement. 13x200MM thick electrode - The upgraded electrode is more accurate and , and uses high-quality resin and metal storage materials, which are easy to clean. It can be inserted into 8-20CM soil and has a wide range of applications. With backlight function - The screen layout is neat, the illumination is at the top of the screen, the nutrient solution pH, and EC are on the same line., Weight: 0.75398093604 pounds, Manufacturer: Yoeruers