This instrument is designed for the measurement of refractive
index(nD) and the average optical dispersion(NF-NC) of the
transparent, the semitransparent and the solid matter. It was
connect with a circulating thermostatic bath, can measure the
refractive index in 0℃~70℃. It also measures the Brix percentage of
sugar solution. It was widely used in oil industry, fat industry,
pharmaceutical factories, paint, food processing, chemistry, sugar
refineries, geologic etc., and relative factories, school and
research center.