saccharimeter (sakarimeter)

[ IMG:content-2666.png:[blocks in formation] A , B , support upon which the tube containing the solution to be examined is placed; b, tube centering Nicol prism, whose position inay be slightly shifted by the leverf ; c , d , graduated circle with mirror at e, and vernier at ; a , tangent screw to adjust the position of the analyzing prism, and thus remove error in the zero-point. IMG:content-2667.png:[ocr errors] polarization of a ray of light transmitted through them. Certain kinds of sugar rotate the plane to the right (dextrorotatory), as grape-sugar (dextrose) and cane-sugar; with others, the rotation is to the left (levorotatory), as levulose; further, the amount of angular rotation varies with the strength of the solution. There are many forms of saccharimeter, some of which measure directly the amount of rotation caused by a layer of the solution of given thickne ; others balance the rotation of the solution against a varying thickne of some rotatory substance, as a compensating quartz plate. - Fermentation saccharimeter, an apparatus, chiefly used in the examination of urine, which is designed to show approximately the quantity of fermentable sugar present in solution by the volume of carbonic acid evolved on fermentation. Fermentation Saccharimeter. saccharum