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Coating apparatus for immobile phase in capillary column

A capillary column and coating device technology, applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problem that it is difficult to form uniform thickness, and achieve the effect of good thickness uniformity

Inactive Publication Date: 2013-05-08
TIANJIN KERMEL CHEM REAGENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the prior art, a small amount of air is dissolved in the coating solution. If the stationary phase is not treated, it is difficult to form a film with uniform thickness after drying, so that the coating success rate is only about 10%.

Method used

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  • Coating apparatus for immobile phase in capillary column
  • Coating apparatus for immobile phase in capillary column

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Experimental program
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Embodiment Construction

[0012] Referring to the accompanying drawings, a coating device for a stationary phase in a capillary column of the present invention includes a closed container 1 for holding a coating liquid 2, the top of the closed container 1 is provided with an insertion port, and the insertion port is filled with an elastic sealing plug 4. The elastic sealing plug 4 is provided with a through hole for inserting the capillary column 5 , and the inner wall of the through hole is in interference fit with the outer wall of the capillary column 5 to be processed.

[0013] The top of the airtight container 1 can also be provided with a sealing cover 3, the sealing cover 3 is closed during use, and the coating liquid 2 is convenient to be filled when the sealing cover 3 is opened.

[0014] Good airtightness is ensured after the capillary column 5 is inserted, and the elastic sealing plug 4 can be made of a material that does not react with the coating liquid, such as tetrafluoroethylene.

[001...

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Abstract

The invention discloses a coating apparatus for an immobile phase in a capillary column. The coating apparatus comprises a closed container for holding a coating liquid, wherein the top of the closed container is provided with an insert connection port, the insert connection port position is filled with an elastic sealing plug, the elastic sealing plug is provided with a through hole for insertion of a capillary column, and the inner wall of the through hole and the outer wall of the capillary column requiring processing form an interference match. With the coating apparatus, degassing and perfusion of the coating liquid can be completed in one time so as to increase capillary column immobile phase coating success rate to more than 95%, and the formed immobile phase has good thickness uniformity.

Description

technical field [0001] The invention relates to a device for pouring and coating a stationary phase into a capillary column. Background technique [0002] Capillary chromatographic columns are widely used in the field of analysis and detection. Capillary chromatographic columns are mainly composed of glass or metal capillary columns and related accessories. The inner wall of the capillary column is coated with a stationary phase, and its performance has a key impact on the detection effect. [0003] During processing, the stationary phase is generally dissolved or dispersed in an organic solvent to form a coating solution, and then the coating solution is poured into the capillary column, and then vacuum-dried to coat the stationary phase material on the inner wall of the capillary column. [0004] In the prior art, a small amount of air is dissolved in the coating solution. If the stationary phase is not treated, it is difficult to form a film with uniform thickness after d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/56
Inventor 寇登民刘振荣
Owner TIANJIN KERMEL CHEM REAGENT