Online chromatograph

This post was last edited by qugd on 2022-7-25 09:15. I think it’s because the original poster doesn’t have a very in-depth understanding of online chromatography, which is why they find such a chromatography column system to be chaotic. In fact, in online chromatography, when it involves multi-channel analysis and the components being analyzed are complex with high separation requirements, and there are components with significant concentration differences whose analysis data need to be obtained simultaneously, a combination of various chromatographic columns is used to switch between different channels. Taking into account the characteristics and requirements of component separation, techniques such as pre-flushing, back-flushing, and the retention or interception of specific components are employed. In addition, post-column derivatization reactions (such as methane converters) are carried out. Depending on the components being analyzed, different detectors are used, which makes such a column system quite complex. As for placing these columns and tubing valves inside the chromatography column box, as long as it does not affect the analysis results, it doesn’t matter if things look a bit messy; what the user needs are the analysis results, not an orderly arrangement. Of course, an organized layout looks better. From your diagram, it can be seen that there are at least three analysis flow paths, and the chromatography columns may include both packed columns and capillary columns, which might be used in combination. The column system is complex, but it should be easy to understand if one refers to the diagram showing the column system configuration, as the appearance of chaos in the column system is due to all the chromatography columns being arranged inside the column box.

Is this from Yokogawa or Siemens?