I. Product parameters:pH range: 3-8 pH;Moisture range: 1-8%;pH accuracy: 0.2pH;Moisture accuracy: 1%.Ambient temperature: 5-50.Size: 40*5.1*5.1CMProbe length: 20CMII. Instructions for use:When using it for the first time, insert the probe into the soil several times to remove the oil and impurities on it. When measuring the pH and humidity of the soil, first insert the probe into the soil as deep as possible. After about 10 minutes, read the pH value. Press the white button next to it, and the meter will display the moisture.When using it, be careful not to touch the stone when plugging in the electrode. Do not use too much force, otherwise it is easy to hurt the electrode. Do not put the instrument and magnetic materials together, and do not keep it in the soil for more than 1 hour. Wash the electrode after use.III. Usage:1. If the soil at the measuring point is too dry or too much fertilizer to measure the pH of the soil, it is necessary to splash water on the measuring point first, and wait for 28 minutes before measuring.2. Before using the tester, you must use a grinding cloth to completely wipe and clean the part of the metal absorption plate to prevent it from affecting the measured value. If the new product is not used, there is protective oil on the surface of the metal plate. You must insert the soil several times and grind the protective oil layer before using it.3. When the acid-base value is measured, it is directly inserted into the soil of the test point. The metal plate surface must be all soiled, and the correct value is obtained in about 10 minutes. Too much soil density, humidity and fertilizer may affect the measured value, so it must be measured several times in different positions to find the average value.4. The acid and base value of the tester is very stable after 10 minutes. At this time, press the white button on the side, and the humidity will be displayed immediately.