用于化学尝试中干燥气体或吸收水分，结构精密、密封性好，可装填干燥剂，满足尝试室精密分析与反映装置的使用要求。

It is used to dry gas or absorb moisture in chemical experiments, with precise structure and good sealing performance, can be filled with desiccant, meeting the requirements of laboratory precision analysis and reaction devices.