This paper suggested am-cresol purple, which could determine quantitatively the content of total acid in vinegar.

利用间甲酚紫作指示剂定量地测定食醋中总酸的含量。

youdao

This paper suggested am-cresol purple, which could determine quantitatively the content of total acid in vinegar.

利用间甲酚紫作指示剂定量地测定食醋中总酸的含量。

youdao