AW-24 Abbe Refractometer, For Laboratory

We will offer a full range of Refractometer is designed for determining the Refractive Indices and the Mean Dispersion of Liquids, Solids and Powders. Measuring them within from N.D. 1.300 to 1.700 requiring no calculation and skillfulness.
    The body of the instrument is fixed, having a leaning of 60°. Correct Refractive index and sugar Percentage can be read directly in field.
    It consists of Abbe Double Prisms with the Thermostat, Compensator, Telescope, Mirror, Limb, Graduated Sector Reading Magnifier & Radial Arm ‘which carries Vernier. Abbe’s Double Prism leaves a narrow space (about 0.1 mm) between the adjoining faces of the prisms. Compensator consists of the Amice Prisms which serve for rendering the line of achromatic separation.
WORKING  INSTRUCTIONS :-
    Adjust the eyepiece of both telescope and reading magnifier, so that well defined image of cross lines and scales is obtained. Open the Abbe’s double prism and put two or three drops of liquid upon the adjoining face of the prism for measuring.
    When the prisms are closed the liquid spreads over the whole surface of the prism forming a thin layer. Adjust the mirror to get proper incident light, and also the Compensator and Radian Arm , so that the boundary line of bright and dark is clearly seen in the visual field of telescope. Turn Radial Arm by means of Fine adjustment to bring the line precisely on the cross line and read of scale on the Sector.
    In case the substance to be examined are dark coloured, such as molasses, fructose or jam and the light from the mirror is not sufficient for observation, take off the cover of the circular opening. Then the light proceeds so as to be reflected on the boundary surface and the prism for convenient observation.