A.KRÜSS Optronic Digital Abbe Refractometer AR2008

A.KRÜSS Optronic Digital Abbe Refractometer AR2008
The modern classic!

The Abbe refractometer was developed in 1869 by Ernst Abbe and is used to determine the refractive index otherwise known as the index of refraction. It is based on the principle of total reflection which occurs at the boundary between the prism and the sample. The refractive index of the prism determines the upper limit of the measurement range, as it always has to be greater than that of the sample. With the AR Series, Krüss has two models of the Abbe refractometer in its range. These are easy to use and require only a small sample volume. These devices allow samples in the form of solids or pastes to be measured just as easily as liquids. Furthermore, colouration or clouding scarcely affect the measurement result. Besides the refractive index, the solid content can be determined in %Brix. To determine the refractive index of solids, a contact liquid with an average refractive index is required. The refractive index of a sample is dependent on the wavelength of the light used for the measurement and on the temperature. As the temperature increases, the refractive index drops. That is why our Abbe refractometers have thermostat connections on both the illumination prism as well as the measurement prism.

The digital Abbe refractometer AR2008 has an electronic data processing system. The refractive index or Brix value is shown on an LCD display together with the temperature. A serial interface allows measured values with date and time to be transferred directly to the PC or printer. An automatic temperature compensation feature is optionally selectable. The AR2008 has a thermostat connection for prisms and a built-in light source (589 nm) for the measuring prism. The AR2008 is extremely sturdy and is ideally suited for use in a harsh environment. It is supplied with a glass calibration plate, contact fluid and a screwdriver as well as a dust hood.

Fields of application
Determination of mixing ratios, quality and quantity inspection in the following industries:

• Beverages
• Food
• Sugar / sweeteners
• Chemicals
• Flavours
• Petrochemicals
• Cosmetics / hygiene
• Metalworking
• Pharmaceuticals
• Water / effluent
• Education / research