One would typically include tests where variability is seen, for example, impurity test, assay, moisture, etc.
只需要对那些可能变化的项目进行测试，例如杂质测试，含量测试，水分等等。
Monographs on bulk pharmaceutical chemicals usually cite one of three types of purity tests:(1) a chromatographic purity test coupled with a nonspecific assay;
有关散装化学药品的正文通常引证三种纯度测试的其中一种：（1）具有非专属性分析的色谱法纯度检查；
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