Chromatographic sample injector

A sample injector and chromatographic technology, applied in the field of chromatographic sample injectors, can solve the problems of lack of simple structure, etc.

Pending Publication Date: 2020-01-03
兰州东立龙信息技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the prior art lacks a chromato

Method used

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  • Chromatographic sample injector
  • Chromatographic sample injector
  • Chromatographic sample injector

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Example Embodiment

[0030] The implementation of the present invention will be illustrated by specific specific examples below, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Although the description of the present invention will be presented in conjunction with a preferred embodiment, it does not mean that the features of the invention are limited to this embodiment. On the contrary, the purpose of introducing the invention in conjunction with the embodiments is to cover other options or modifications that may be extended based on the claims of the present invention. The following description contains numerous specific details in order to provide a thorough understanding of the present invention. The invention may also be practiced without these details. Also, some specific details will be omitted from the description in order to avoid obscuring or obscuring the gist of the present invent...

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Abstract

The invention discloses a chromatographic sample injector. The chromatographic sample injector comprises a cylinder body, a pushing rod and a pushing head, and further comprises a positioning part, wherein the first end of the positioning part is fixedly connected to the position, close to the pushing head, of the pushing rod, and the second end of the positioning part is movably connected to theouter wall of the cylinder body; when the pushing rod slides up and down in the cylinder body, the second end of the positioning part slides up and down outside the cylinder body; the second end of the positioning part is provided with a locking member; and when the locking member is in a locking state, the position of the second end of the positioning part relative to the outer wall of the cylinder body is locked, and the relative position of the pushing rod in the cylinder body is fixed. The chromatographic sample injector is simple in structure, and the sample volume after sampling can be ensured to be stable and does not change easily, so that the sampling amount is accurate.

Description

technical field [0001] The invention relates to the detection field, in particular to a chromatographic sample injector. Background technique [0002] When performing chromatographic analysis, it is necessary to inject the sample into the analytical instrument through the chromatographic injector for quantitative analysis. Whether the chromatographic injector injects the sample accurately is of great significance to the analysis results. At present, most commonly used chromatographic sample injectors are made of ordinary syringes. When sampling, the operator needs to carefully observe the scale to determine the sampling volume. Moreover, after sampling, the process of transferring the sample to the sample port of the chromatographic instrument may cause the position of the piston in the chromatographic sampler to change due to reasons such as operation, thereby making the sampling volume inaccurate and affecting the accuracy of the test data. [0003] Chinese patent CN20333...

Claims

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Application Information

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IPC IPC(8): G01N30/18
CPCG01N30/18
Inventor 魏伟石地娟高艳华王钦玥
Owner 兰州东立龙信息技术有限公司
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