The sugar meter needs to calibrate the zero point before measurement. Take a few drops of distilled water and place them on the detection prism. Turn the zero adjustment screw to adjust the dividing line to 0 percent of the scale. Then wipe off the testing prism for testing. Some models of instruments require the preparation of standard solutions to replace distilled water during calibration.

Nowadays, with the development of science and technology, instruments and equipment are becoming increasingly intelligent. The sugar meter is also changing rapidly. There are several types of sugar meters available on the market: handheld sugar meters, digital sugar meters, and fruit sugar non-destructive testing machines.