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Injector pads that affect the repeatability of GC analysis

 Last Update: 2022-08-30
 Source: Internet
 Author: User

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In gas chromatography analysis, repeatability is a very important parameter.

Generally speaking, considering the influence of the injection pad on the repeatability, it mainly includes the following aspects:

In the actual analysis process, if the injection pad is too loose, it may cause air leakage at the injection port; if the injection pad is too tight, during the injection process, the injection needle may be bent or cannot be inserted, or even if it can be The injection needle is stuck into the injection port, and the pressure fluctuation of the injection port before and after injection will also cause poor repeatability of sample vaporization and splitting

(2) The number of times of use of the

In the actual analysis process, whether a capillary column or a packed column is used, the tightness of the injection pad has a great influence on the repeatability

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