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.
酸碱滴定法测定碳酸氢钠的含量。
课题论述了酸碱滴定法的基本原理，为本仪器的研究奠定了理论基础。
The basic theory of acid-alkali titration is dissertated in this article, which established the theory base for the researching of this apparatus.
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