Measurement of refractive index nD of transparent or translucent liquid and solid substances. Measurement of the Brix of sugar solution. Visual aim and LCD display. Automatic correction of the effect to temp. on the Brix. Prism made of hard glass. Supply with RS232. Instrument can widely used in petroleum, Chemical, Pharmaceutical, Food industries, Colleges, Universities and Scientific research institutions. Measurement range nD 1.30000 - 1.70000. Measuring Accuracy nD ±0.0002.