Handheld sugar meter principle:
Everyone knows that when light enters from one medium to another, light will have a refraction effect. The ratio of the incident angle i to the sine of the refraction angle r is a fixed value, which is the relative refractive index of light in these two media, expressed by the formula: n = sini/sinr. The refractive index is also called the refractive index. In fact, the reason is the same. In the field of agriculture, it is often necessary to determine the sugar content of fruits and vegetables, because the soluble solids content of fruit and vegetable juices and the refractive index are proportional to certain conditions, so as long as the refractive index of fruit and vegetable juices is measured, the concentration of fruit and vegetable juices can be obtained. Sugar content of fruits and vegetables. Therefore, hand-held sugar meter is actually using the principle of light refraction to complete the determination of the sugar content of fruits and vegetables.
The principle of hand-held sugar meter is very simple, so, nowadays, there are many hand-held sugar meters on the market, including different manufacturers, different models, such as hand-held refractometer, WZ series handheld sugar meter, GMK-706R sugar acidity tester Wait. Different types of sugar meters can measure different ranges of sugar content. Hand-held sugar meter has been widely used in industry, agriculture, sugar, machinery, chemical industry and other industries. Through the determination of the sugar content of fruits and vegetables, the quality of fruits and vegetables can be understood, and the maturity of the fruit can be estimated.
How to use the handheld sugar meter:
Open the cover and wipe the detection prism carefully with a soft cloth. Take a few drops of the solution to be tested and place it on the detection prism. Gently close the cover to avoid bubbles and spread the solution over the surface of the prism. Place the instrument into the light plate at the light source or in a bright place. The eye observes the field of view through the eyepiece. Turn the eyepiece to adjust the handwheel so that the blue-white demarcation line of the field of view is clear. The scale of the dividing line is the concentration of the solution.
Pay attention to correction and temperature correction
The instrument needs to correct the zero before measuring. Take a few drops of distilled water and place it on the detection prism. Turn the zero adjustment screw to adjust the dividing line to the scale 0% position. Then clean the detection prism and perform inspection. Some types of instruments require standard solutions instead of distilled water. The other method is (only suitable for the determination of sugar content): using the temperature correction table, read the value at the ambient temperature plus (or minus) the temperature correction value to obtain the accurate value.
Sugar meter classification:
Today, with the development of science and technology, instruments and equipment are becoming more and more intelligent. Sugarmeters are also changing with each passing day. There are several kinds of sugarmeters available on the market: hand-held sugar testers, digital sugar testers, and fruit sugar non-destructive testers. Among them, the fruit sugar content non-destructive tester is a newly developed instrument for the non-destructive determination of fruit sugar using near-infrared spectroscopy technology. It has the advantages of not having to cut the fruit, placing the probe directly on the fruit surface, and giving out the test results in 3 seconds. (For details, please refer to the fruit sugar non-destructive testing analyzer http:// introduction). The development of sugarmeters also represents the development of modern scientific instruments. Scientific instruments have been increasingly concerned by various departments, organizations, and even people from all walks of life because of the recent changes in KFC’s Sudanese and Sanlu’s melamine. In the Nianfumen incident at Nongfu Spring, there were food quality incidents such as water injections, poison dumplings, and lean meats. People have become less and less confident about the foods they use daily, and they are increasingly frightened. How to improve the quality of our food will be a common issue explored by the entire world and all human beings. We are looking forward to the emergence of more and more green foods to protect our lives and health.