A refractometer, also known as a refractometer, is an instrument that uses light to test the concentration of a liquid. It is used to measure the refractive index, birefringence, and optical properties. The refractive index is one of the important physical constants of matter. Many pure substances have a certain refractive index. If the substance contains impurities, the refractive index will change, and there will be deviations. The more impurities, the greater the deviation.
The fully automatic refractometer (RA-620/RA-600) is a liquid refractometer designed to be easy to operate and space-saving. There are two types of high-precision RA-620 and wide-range RA-600. The RA-620 achieves the world's highest level of high precision with an accuracy of ±0.00002. The RA-600 has a broad measurement range of 1.3200-1.7000. The appearance is half that of the previous model (RA-520N/RA-500N), and the footprint is the size that A4 paper can accommodate. Power consumption 20W is half of the previous model.
In terms of functions, a color liquid crystal display and a touch panel are used, and USB and LAN are standard interfaces to cope with various expanded devices. Japan's Kyoto Electronics Industry Co., Ltd. (KEM) is the only manufacturer of refractive index standard solutions recognized by the national standard in Japan. The digital refractometer (RA-620/RA-600) can be used to check the refractive index standard solution, providing users with high-precision and high-confidence analysis results.
When light enters another transparent medium from one transparent medium, the phenomenon of refraction occurs. This phenomenon is caused by the different speed of light in various media. Refractive index refers to the ratio of the speed at which light travels in air to the speed at which it travels in other substances.