SIS – 1349 ( A )
Measuring Range: ND 1.3000 to 1.7000 in Step of 0.001 { Accuracy : ± 0.0002 }
Sugar ( Percentage ) : 0 to 95% in step of 1 Division { Accuracy : 0.5 % }
It is a standard Instrument for measuring refractive index and dispersion of liquids and solids and also for derermining the percentage contents of sugar in water solutions.
The body of the instrument is fixed having a leaning of 60° , correct refractive index and sugar percentage can be read directly in the field. It consists of a abbe double prism compensator , telescope mirror limb , graduated sector , reading magnifier and a radial arm which carries a vernier. Abbe’s Double prisms leaves a narrow space ( about 0.1 mm ) between the adjointing faces of prism and compensator consists of the prisms which serves for rendering the line of achromatic separation .
A thermometer is fitted on the double prism.
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