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A refractometer measures the extent to which light is bent (i.e. refracted) when it moves from air into a sample and is typically used to determine the index of refraction (aka refractive index or n) of a liquid sample. Read more...

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Equipment
More stringent requirements of quality control and, in some cases, changing legislation, mean that greater accuracy is being demanded of refractometers. The Abbe 60 Direct Reading models, available in two measuring ranges, have been designed to meet these requirements.
The Optilab® UT-rEX™ (UHPLC refractometer with EXtended range) from Wyatt Technology is the first RI detector that can be coupled with any UHPLC unit.
Refractometers are important for veterinary and human use. The duo scale OPTi-Sport plays an important role in determining hydration levels of athletes and also in controlling the content of sugar in sports drink before consuming.
A number of leading companies consider the RFM300+ series refractometers as the ultimate instrument to be installed in challenging factory environments and also as a primary quality control tool.
The OPTi digital hand-held refractometers are manufactured in UK as a highly reliable premium quality instrument suitable for arduous environments to be suitable for a large number of applications.
The Optilab® T-rEX™ (refractometometer with EXtended range) from Wyatt Technology is designed for use with HPLC, FPLC, FFF or GPC separation units along with a Wyatt multi-angle light scattering (MALS) detector such as the DAWN® HELEOS® II or miniDAWN™ TREOS®, for the absolute determination of the molar mass of all kinds of macromolecules in solution.
The refractometer ARAGO is used for fluid refractive index measurements. The ratio between the speed of light radiation in a vacuum and its speed in the sample medium is the refractive index.
The Pro-Juice refractometer has been specifically developed to focus on the practical handling of the sample prior to high accuracy measurement in order to achieve a measurement accuracy of 0.01 °Brix for sucrose solutions.
Refracto 30GS is a compact, easy-to use portable refractometer for measurements in laboratory and production environments. It offers an extended measuring range thanks to it's special prism design.
Hand held refractometers are used for quick and convenient measurement of concentration in several semi-solid and liquid samples.
The measuring range of the successful half Brix OPTi which was launched in 2011 is extended by OPTi+ hand held refractometers.
ATAGO's Abbe Refractometers are highly reliable instruments which measure Refractive Index. Compared with other types of refractometers, the Abbe refractometers are capable of measuring liquid and solid samples such as plate glasses, plastic sheets, and other solid films.
Digital Refractometer with built-in thermostat. 5 place digital refractometer for measurement of refractive index, BRIX, HFCS or concentration of aqueous solutions.
Cole-Parmer PolyStat heated circulating baths and refrigerated circulating baths are available in multiple configurations to deliver the ideal combination of precision, versatility, and repeatability for your requirements. These next generation circulating baths feature touch-pad setting, making it easier to adjust the temperature to your requirements.