The refractometer is a tool designed to measure the refractive indices in substances. It is used in the brewing industry to monitor fermentation and measure sugar concentrations in the original extract, using only small amounts of drops as a sample, where the refractive light passes through and avoids measurement errors.

Similarly, it is optical equipment that calculates the specific gravity of the extract, where the sample quantities are collected and recorded in liquids in degrees Brix, where their scale is used for beer producers. Thanks to its design, beer equipment can be used anytime and anywhere and its simple handling makes the refractometer the ideal equipment.

Refractometers are optical instruments that are used to determine the percentage of soluble solids in a liquid solution. For this, the refractometer makes use of the principle of total refraction of light (caused by the type and concentration of substances dissolved in a liquid solution such as sugar), which takes place in the boundary layer between the prism and the sample. The refractive index of the prism determines the upper limit of the measuring range, since this should always be greater than that of the sample. The refractometer therefore measures the density of liquids, the denser a liquid the greater the refraction.