Method and principle of refractive index determination:
The refraction of light rays from one transparent medium to another is caused by the different velocities of light rays in different 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.
refractive index
The ratio of the speed of light in air to the speed of light in the measured object or the ratio of the sine of the incident angle of light passing through the measured object from air to the sine of the refraction angle under the condition of 20 ° C on the D line of sodium spectrum.
 
Main features:
 
1. The automatic refractometer has a touch digital LCD screen to display refractive index, sugar content and concentration.
2. Built-in automatic constant temperature control, total reflection measurement, easy operation and fast measurement speed.
3. The LED light source is durable, and the measuring prism is inert sapphire with high hardness and wear resistance.
4. The automatic refractometer conforms to GLP/GMP specification, and stores results, inspection and correction records.
5. The automatic refractometer can input the refractive index and temperature comparison table to automatically compensate the refractive index of the sample.
6. Digital refractometer can input refractive index and concentration comparison table, and automatically convert sample concentration.
7. Standard sample volatilization cover plate to prevent the influence and error of detection caused by volatile samples.
8. Digital densimeter and automatic sampler can be connected externally to measure density and refractive index at the same time.
9. Chinese display refractometer, simple test method, high performance and high precision data.