五千年(敝帚自珍)

主题:不能想象三鹿会这样 -- 二胡

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家园 凯氏定氮法(Kjeldahl method)

这个方法应该已经不用了吧?

外链出处

In practice, the Kjeldahl test is not the common method used to measure protein in milk today. Milk infrared analyzers have become the most common test instruments used to determine the amount of true protein. These analyzers eliminate essentially all of the measurement error in determining the amount of usable protein in milk.

难道中国不一样?

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