The soil pH meter PCE-228S is used to measure the soil pH value. The pH and temperature can be stored directly on the SD card. The special pH electrode of the pH meter PCE-228S is manufactured so that it is possible to measure with the pH meter in loosened soil. Temperature compensation is either manual or automatic via the supplied temperature sensor.
Please always make sure that the measuring principle requires a minimum residual moisture in the soil. Thus, this soil pH meter is the ideal solution for the accurate measurement of soil pH, in substrates, for horticultural irrigation solutions used in greenhouses and also in agricultural products and plants. 
The meter is always factory calibrated. A continuous recalibration of the pH meter is carried out by means of the supplied calibration standards (buffer solutions). The calibration data remains stored when the battery is changed. In general, you can simply pierce the electrode into the ground and read the pH directly on the digital display. If you would like to carry out a measurement according to DIN or if you can not penetrate deep enough into the soil due to soil hardness, then you should prepare a DIN soil solution and use it for the exact measurement.