This 9-in-1 digital soil tester measures nitrogen, phosphorus, potassium, pH, EC, moisture, temperature, salinity and fertility in one device. It is designed for routine soil monitoring in gardens, greenhouses, lawns,...

This 6-in-1 tester focuses on nutrients: it reads nitrogen (N), phosphorus (P), and potassium (K) along with moisture and temperature, and grades your soil from Deficient to Rich so a...