Tildenet Soil Test KitTest the pH and nutrient profile of your soil with this simple all in one kit. Containing all equipment and full instructions, the kit makes it easy to maintain an ideal growing environment for your plants by checking soil acidity and levels of nitrogen, phosphorus and potash. Key Features: A complete soil testing kit for checking levels of pH, nitrogen, phosphorus, and potash. Approx 40 tests. Test your soil for a healthy Garden