Such methods are reliable, easy-operating and particularly fit for the preparative separation and analysis of the sample containing unknown amino acids.
本法简便可靠，特别适合于含未知结构氨基酸样品的制备分离及分析。
Preparative high-speed counter-current chromatography (HSCCC) was used for the separation of calycosin and formononetin from the ethyl acetate extract of Astragalus membranaceus Bge.
采用高速逆流色谱法（HSCCC），以正己烷氯仿甲醇水组成二相系统作为固定相与流动相，对黄芪的乙酸乙酯粗提物进行了分离纯化。
The results show that if the separation demand can be satisfied, column can be overloaded in order to achieve more preparative throughput.
结果表明，在制备分离过程中，在满足分离要求的前提下，可以采用柱超载方式操作，以提高制备量。
A preparative and separation method using low pressure liquid chromatography to isolate crocins has been developed.
采用低压液相色谱法制备西红花有效成分西红花甙。
UV6000 is special designed for preparative HPLC system. It can detect the samples online during the separation and purification. So it can improve the accuracy and results of the separation.
UV 6000制备型紫外可见光检测器专为制备液相色谱仪系统设计，可在样品分离纯化过程中实现在线监测，大大提高制备过程中的准确性和分离纯化效果。
UV6000 is special designed for preparative HPLC system. It can detect the samples online during the separation and purification. So it can improve the accuracy and results of the separation.
UV 6000制备型紫外可见光检测器专为制备液相色谱仪系统设计，可在样品分离纯化过程中实现在线监测，大大提高制备过程中的准确性和分离纯化效果。
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