A refractometer is a laboratory or field device for the measurement of an index of refraction (refractometry). Bellingham + Stanley offer one of the largest choices of digital refractometers in the World today. All refractometers are made to the highest standard and with 100-years of experience.
Link: https://www.bellinghamandstanley.com/ltd/laboratory-refractometers.html
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Rudolph Research Analytical is a leading analytical laboratory instrument supplier, manufacturing precision quality benchtop instruments for the Pharmaceutical, Chemical, Petroleum, Petro-Chemical, Food, and Beverage industries.