Manual flow stopping type two-dimensional liquid chromatography capable of accurately acquiring sampling time and application of manual flow stopping type two-dimensional liquid chromatography

The invention discloses a manual flow stopping type two-dimensional liquid chromatography capable of accurately acquiring sampling time and application of the manual flow stopping type two-dimensional liquid chromatography. According to the liquid chromatography, a manual multi-way valve is serially connected with a bidirectional trigger to obtain a flow channel switching device, the problems that a flow stopping type two-dimensional liquid chromatography cannot accurately acquire the sampling time and pressure pulse exists at the moment of flow stopping are solved successfully, and a complete two-dimensional liquid chromatography system structure is provided, so that accuracy and repeatability of flow stopping type two-dimensional liquid chromatography analysis are improved to a great extent, and practical application of the flow stopping type two-dimensional liquid chromatography is realized.