Speciation: Size: 18 x 6.3 x 2.5cm / 7.08 x 2.48 x 0.98 inch (appr.) Probe Length: 8.5cm / 3.35 inch (appr.) Instructions for use: How to analyze soil fertility? 1. Remove the topsoil about 5 cm first; then smash the soil down to 13 cm deep. And clean up all the organic impurities in the soil that will affect the test results, such as leaves, roots and so on. 2. Soak the soil with water and make it muddy. (It is best to use rain or distilled water). 3. Wipe the probe with a clean cotton or paper towel. 4. Turn the function button to the first gear from the left. 5. Insert the probe into the soil to be tested until the soil is no more than 2.5 cm from the fuselage. Wait up to 10 seconds, and the data can be read after the pointer is stable. 6. Record the data. Remove the probe from the soil and thoroughly clean the probe. How to analyze the pH of the soil? 1. Remove the topsoil of the soil to be tested by about 5 cm; then smash the soil down to 13 cm deep. And clean up all the organic impurities in the soil that will affect the test results, such as leaves, roots and so on. 2. Soak the soil with water and make it muddy. (preferably rain or distilled water) 3. Turn the function button to the rightmost gear. 4. Wet the probe. Wipe the rightmost of the three probes with a clean cotton pad. 5. Insert the probe completely into the soil being tested. 6. Wait 1 minute to read the data. 7. After the test is finished, wipe the probe and dry it. Package Included: 1 x Soil Moisture Meter and pH Level Tester Features 2 IN 1 FUNCTION: This 2-in-1 tester can monitor soil moisture and pH to easily understand the condition of your plants, taking the guesswork and memory out of wondering when you watered last and how much water finicky plants need. LIGHTWEIGHT & PORTABLE: This farm plant soil testing kit with a lightweight and portable design is convenient to carry with you anywhere for indoor and outdoor use for a long time. HIGH ACCURATE: This high-precision crop tester can easily & accurately read moisture and pH data, which is about 0.25 pH(20PC), suitable for farm or education experiments. INDOOR& OUTDOOR DESIGN: This ph level acidity alkalinity is widely used to test the soil conditions of fruits, flowers, vegetables, and shrubs, which is the ideal soil test tool kit for farms and garden CONVENIENT OPERATION: The pH moisture meter doesn't need batteries, just insert the sensor probe into the soil about 2-4 inches, Switch to the moisture/pH button according to demand, and then wait for a few minutes till the pointer stops swinging to get a stable reading on the scale dial.