It can be combined with Laboratory Parallel Evaporator/Concentrator, Rotary Evaporator, Vacuum Drying Oven, Vacuum Centrifugal Concentrator, Vacuum Filtration, Solid Phase Extraction and other Sample Pretreatment Equipment, the solvent vapor is condensed and recovered, and can also be combined with vacuum pump to purify the exhaust gas discharged from the vacuum pump, reduce the pollution of the organic waste gas to the environment, and protect the health of the experimental personnel.