Refractometry is generally speaking the measurement of refractive index and its interpretation under different starting points.
Refractometric measurements can be used for example for purity investigations, sample recognition, dilution control, or composition. It’s also used for the characterization of substances or for the determination of substance data, especially of organic liquids.
Application areas of refractometers
An important area of application is food-analysis. For example the investigation of oils or fat, sugar, and sugar-containing substances. Also, beer and spirituous beverages belong to the material class, which are investigated by refractometry as well as clinical chemistry. Furthermore, refractometers are used as universal detectors in the investigation of liquids.