The image is a schematic diagram of the whole process from volatile trapping to analysis. It is displayed on a large screen in a dark room with a crowd of people visible in the background. The diagram is divided into three sections.

The first section is titled "A schematic diagram" and shows a diagram of a vacuum chamber with a vacuum tube inside. The vacuum tube is connected to a vacuum pump, which is used to transfer liquid from one chamber to another. The second section is labeled "Voltage Trapping to Analysis" and has a diagram that shows the flow of liquid through the vacuum chamber. The third section has a flowchart that shows how the liquid is transferred from the vacuum to the other chamber. 

At the bottom of the diagram, there is text that explains the purpose of the vacuum and how it is used in the analysis process. The text also mentions that the vacuum is being used to measure the volume of the liquid and that it can be used to analyze it.