氮气柜常用于存放一些暴露在空气中易氧化的物料，如半导体及光电行业的晶圆片，封装行业的BGA芯片等湿敏元器件或太阳能行业的电池片等，也适用于存放一些贵金属等产品。利用高纯度的氮气充入氮气柜内部，置换出原有的空气来保护存储的物料。

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