Pretreatment equipment system In order to ensure that the samples entering the analyzer are suitable for the specified conditions required by the operation of the instrument, so as to avoid the interference components in the samples having an impact on the instrument side volume, the samples sent from the sampling system must be pretreated before entering the instrument J pre-treatment system for pressure stabilization, filtration, cooling, drying, separation, constant volume, dilution and other operations on gas or liquid samples; Solid samples can be cut, ground, processed and formed. The pretreatment system has a great impact on the application quality of analytical instruments, and it varies greatly due to different samples, so it needs special research and design.