This 2 in 1 soil tester can measure soil fertility and pH with this triple-probed device. It's great for whatever you have planted or are about to plant. No batteries required for operation. Features: 2 in 1 soil tester can measure soil fertility and pH. Helps provide a healthy growing environment for plants. Three probes for more consistent readings. No batteries required, easy and simple to use. Great tool for plants, flowers, vegetable gardens and lawns. Specifications: Color: Black; Material: Plastic; Soil pH Measurement Range: About 0-9.0 pH; Accuracy: About 0.25 pH(20C); 0.2 pH (Suitable for farm); Working Temperature: 0- 50C(32-122F); Length of Probe: About 8.2cm / 3.23in; Item Size: 18 * 6 * 3cm / 7.09 * 2.36 * 1.2in; Item Weight: 63g / 2.22oz; Package Size: 25.8 * 10.5 * 3.3cm / 10.16 * 4.13 * 1.3in; Package Weight: 95g / 3.35oz; Package List: 1 * Soil Tester; Using Method: 1. Remove the surface soil for about 5cm, then downward mash soil to 13cm depth and clear the organic impurities which would affect the testing results, such as leaves and roots; 2. Saturate the soil with water(recommend rain water or distilled water); 3. Wipe the probes with cleaning cotton or tissue; 4. Select the modes to test soil fertility or pH; 5. Insert the probes into the soil until the distance between soil and machine body not exceeds 2.5cm; 6. Wait for the pointer stable and read the values. Note: Please do not insert the probe into the soil for a long time and do not use it to test the liquids, or it may damage the product.