The process refractometer PR21 of A.KRÜSS Optronic, Hamburg, is a universal measuring instrument for determining the refractive index and therefore the concentration of a substance in liquid in a ...

Abstract: We demonstrate a new simple multi-point refractometer using Fresnel reflection at the fiber tip with closely spaced interferometer for intensity reference. A combined technique for ...

A refractometer is an optical device used for measuring the extent to which light is bent, or refracted when it moves through a substance. It works because light travels at different velocities in ...

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The K-Patents Process Refractometer determines the concentration of dissolved solids by making an optical measurement of a solution's refractive index and it is the most accurate, reliable and easy-to ...