The concentration of liquid is inversely proportional to the temperature.
For example, 10% of sucrose solution at 20 degrees changes by 0.07 once it changes.
Therefore, in order to measure the concentration accurately, it is necessary to measure the temperature every time.
However, it is difficult to manage in the light of the temperature compensation table.
Therefore, Atago's refractometer deals with products with an automatic temperature compensation function that detects the temperature of the sample and always corrects it to the value at 20 degrees.