旋光仪测定制剂中葡萄糖等旋光物质的含量或纯杂程度，具有特异性好、准确度高，不受制剂中非旋光物质干扰及适用浓度范围较宽等优点。因而得到广泛应用。但葡萄糖固体和水溶液的旋光不一致。刚配制的葡萄糖溶液的旋光则是从固体到液体的变动过程。不注意这点，有时可出现较大 Polarimeter Determination of the content of glucose or other optical substances in the preparation or pure degree of impurity, with good specificity, high accuracy, free from non-optically active substances interfere with the preparation and application of a wide range of advantages. It has been widely used. However, the optical rotation of glucose solids and aqueous solutions is inconsistent. The optical rotation of glucose solution just prepared is from solid to liquid changes. Do not pay attention to this point, sometimes larger