Liquid chromatograph enrichment column

Abstract

The invention belongs to the technical field of chromatographic instruments, and particularly relates to a liquid chromatograph enrichment column. The column comprises a column body, a pipe body and a connecting cover, fixing mechanisms are arranged above the left side and the right side in the column body, first buckles are connected to the left side and the right side of the bottom of the connecting cover, the first buckles are inserted into the fixing mechanisms, and the connecting cover is fixed to the top of the column body through the first buckles. The top of the pipe body is connected with the bottom of the connecting cover, a liquid inlet pipe is arranged in the middle of the top of the connecting cover and communicated with the pipe body, an inserting groove is transversely formed in the upper portion of the pipe body, a filter plate is inserted into the inserting groove, a fixing block is connected to the right side of the filter plate, and clamping grooves are transversely formed in the upper portion and the lower portion of the right side of the inserting groove. The connecting cover is more quickly and conveniently detached from the column body through the fixing mechanism, so that parts on the pipe body are replaced, the time is saved, the maintenance and replacement efficiency is improved, a filter layer arranged in the filter ring can retain strongly-retained substances in liquid in the filter layer, the filter effect is better, and the pollution of strongly reserved substances to the chromatographic column is avoided.

Description

technical field [0001] The invention relates to the technical field of chromatography, in particular to a liquid chromatography enrichment column. Background technique [0002] Liquid chromatography is an instrument that uses the difference in the distribution ratio of the mixed liquid between liquid-solid or two immiscible liquids to separate the mixture first and then identify it. It is required that the sample can be made into a solution without being limited by the volatility of the sample. , the mobile phase has a wide range of options, and there are many types of stationary phases, so it can separate thermally unstable and non-volatile, dissociated and non-dissociated substances as well as substances in various molecular weight ranges. The enrichment column is a liquid chromatograph It can filter the impurities in the sample, thus protecting the chromatographic column, but the filtering effect of the existing enrichment column is not ideal, and when the existing enrich...

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Problems solved by technology

[0003] The object of the present invention is to provide a kind of liquid chromatograph enrichment column, to solve the unsatisfactory filtering effect proposed in the above-mentioned background technology, and when the existing enrichment column is in use, it is not convenient enough to disassemble the internal filter tube, which wastes a matter of time

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