PH Soil Tester: Soil Tester Kit, 3 in 1 soil tester allows you with scientific methods to measure soil light, moisture and pH. Our soil test kit helps you make your plants healthier. (Cannot be used to measure water pH). Easy to use: No battery needed, just insert the probe into the measured ground (with a depth of at least 10 cm) to obtain exact and precise data. The soil tester pointer will not rotate if your plants are very dry. So your plants need to water now . Super durable: PH uses a metal probe which is more durable than the glass probe (please note that the metal probe should be cleaned after use to keep the probe dry and clean). Suitable for indoor and outdoor: This 3 in 1 soil tester is a great tool for managing your garden, flowers, plants, vegetables, shrubs, etc. Scientifically Accurate: Very easy and accurate to read humidity, pH and light levels.