They are mainly used to measure the concentration of various liquids of cane sugar, glucose, lactose, maltose, etc. In sugar house, breweries. Yeast factories and alchol factories.

• 主要用于制糖厂、啤酒厂、酵母厂、酒精厂、以测定各种蔗糖、葡萄糖、乳糖、麦芽糖等溶液的浓度。