The successful application of colorimetry in the sugar industry is dependent upon the development of a satisfactory technique for preparing sugar solutions having a satisfactory degree of transparency. In the present paper existing methods have been revised. The process of clarification has been shortened and the transparency of the solutions improved. These results have been accomplished by increasing the concentration of the dry substance or total solids, dis- solving and filtering the sugar products hot, and developing the application of better filters.
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Brewster et al. (1933) studied this question.