实验首先对原料壳聚糖的物理性质进行测定：采用酸碱指示剂滴定法测定壳聚糖的脱乙酰度约为83%，应用粘度法测定其粘均分子量为十万左右。
The first work of this paper is measuring physical properties of chitosan. Degree of deacetylation(DD)of chitosan determined by acid base titration is about 83%.
制作过程中加入吊白块，用酸碱滴定法分别测定水豆腐压滤液、离浆液和蒸馏液中甲醛含量。
The formaldehyde contents in tofu filtrate, liquid separated from beancurd and the distillate of beancurd were measured by acid-base titration.
采用酸碱双点电位滴定法测定盐酸雷尼替丁含量。
Double - point potentiometric titration was used to determine ranitidine hydrochloride and its capsules.
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