One-button automatic calibration function, when calibrating, just set the known TDS value in the instrument and immerse the electrode sensor in the calibration solution, and press the CAL key, the instrument will automatically calibrate and store the calibration value.
Calibration refers to a set of operations to determine the indication error of measuring instruments under specified conditions. It is a set of operations to determine the relationship between the indicated value of measuring instruments or measuring systems, or the value represented by physical measuring tools or reference materials, and the corresponding measured known values under specified conditions.