今日新闻            日期：2023/4/28

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1、分析型色谱仪   又可分为实验室用色谱仪和便携式色谱仪。它主要用于各种样品的分析，其特点是色谱柱较细，分析的样品量少。

2、制备型色谱仪   又可分为实验室用制备色谱仪和工业用大型制造纯物质的制备色谱仪。制备型色谱仪可以完成一般分离方法难以完成的纯物质制备任务，如纯化学试剂的制备，蛋白质的纯化。

翻译：

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1、ananlytical chromatograph can divided into laboratory chromatograph and portable chromatorgraph.It is mainnly used for the analy of a variety of samples,Which is characterized by a fine chromatographic and less sample analysis.

2、preparative chromatograph can be divided into laboratory preparative chromatograph and industrial large manufacturing pure material preparative chromatograph. Preparation-type chromatograph can complete the general separation method is difficult to complete the preparation of pure substances, such as the preparation of pure chemical reagents ,the purification of proteins.