The cyclic purification glove box: A set of strict work space is made up by the box and the cyclic purification system which can remove the harmful gas such as water and oxygen. Remove the harmful substances continuously through the role of the physical and chemical adsorption of the purification materials, and make the water and oxygen content in the box less than 1 PPM. Widely used in experiments a n d p r o d u c t i o n p r o c e s s w h i c h ’ s requirements of the water and oxygen content is extremely harsh.