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Portable Optical Refractometer

The optical refractometer is a control tool to analyse the refraction rate of a substance or a blend and, at the same time, the amount of soluble solids of a sample as an aqueous solution. Refractometers are suitable to determine the content in sugars of wines and spirits. There are also used in the canning sector to analyse the content in sugars of a product.

The optical refractometer uses a physical operation system according to which, the increase of the density is directly proportional to its refraction rate.



Graduated scale seen through eyepiece alimentazione e Cavo



Equipped of:

  • safeguard
  • calibration screwdriver
  • lid with LED illumination that allows an optimal reading even in the lack of lighy. The internal battery allows the use for about 10 000 readings.

Refractometer details :

  • Scale % sugars: 0° - 80° Brix
  • Resolution 1%
  • Precision +/- 0,5%.


The scale in Brix degree (%) shows the concentration in percentage of the content of soluble solids in a sample as an aqueous solution.
The content of soluble solids is the total of all dissolved substances in the water such as sugars, salts, proteins, acids, etc. So, the read measure is the total of all these substances.

Conventionally the Brix degree (%) is considered as the amount of grams of brown sugar contained in a solution (100 % means 100 gr. of brown sugar in a liter of distilled water).
So, when a pure sugar solution is measured, the Brix degree corresponds exactly to its real content.

In fact, the Brix degree measures the optical activity and the capacity of a substance- sugars in particular- to deflect the light and therefore, as among the soluble substances present in plant juices those who have optic activity are almost just the sugars, they get a read of their fairly reliable content


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