This digital refractometer can automatically set up the temperature differences between a range from 5°C to 40°C.
It is recommended to leave the instrument and the liquid in the same environment for some time.
The devise is equipped with an automatic correction system for the difference in temperature.
It is better to take a reading several days in a row for better results and accuracy. It is also better to maintain a 20°C environment and use distilled water at the same temperature for the calibration.