Solution transfer-free sample centrifuge filter

Abstract

The invention relates to a solution transfer-free sample centrifuge filter, and belongs to the technical field of laboratory sample preprocessing. The solution transfer-free sample centrifuge filter comprises a receiving tube, a filtering tube, an adapter and a screw lid which are connected through mutual matching threads; the upper end of the receiving tube is open, the lower end of the receiving tube is closed, the upper end of the filter tube is open, the lower end of the filtering tube is latticed, the upper end and the lower end of the adapter are open, the adapter is a connecting tube, the upper end of the screw lid is closed, and the lower end of the screw lid is open; when filtering and centrifuging are carried out, the filtering tube is arranged above the receiving tube, and the top of the filtering tube is sealed through the screw lid; and when sample introduction and analysis are carried out, the adapter is arranged above the receiving tube, and the top of the adapter is sealed by the screw lid. The centrifuge filter overcomes the abuse of tedious use of present filters, can simplify the filtering step before sample instrument analysis, and effectively improves the working efficiency.

Description

technical field [0001] The invention relates to a sample centrifugal filter without transferring solution, and belongs to the technical field of laboratory sample pretreatment. Background technique [0002] High-performance liquid chromatography (HPLC) is a conventional large-scale analytical instrument in physical and chemical analysis. As the main consumable for liquid phase separation, the chromatographic column is expensive, and its performance determines the effect of liquid phase separation. The chromatographic column Column pressure is one of the main parameters to measure the performance of the chromatographic column. As the usage time of the chromatographic column increases, it will be increasingly blocked by particles in the sample solution, and the column pressure of the chromatographic column will also increase accordingly, and the performance of the chromatographic column will also increase. will decrease accordingly. With the upgrading of HPLC, ultra-high perf...

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that the efficiency is not high in the pretreatment of large batches of samples, and it needs to be manually removed one by one. There is also the possibility that the disposable injection needle may injure the hands of the experimenter during use, and there are a large number of highly toxic, High concentration of standard solution has potential health hazards;

[0005] 2. Some products adopt the centrifugal filter method, but after centrifugation, the filtrate still needs to be manually transferred to the sampling vial, which increases manpower and may cause experimental errors

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