In order to prevent certain objects exposed to the air by oxygen oxidation, filled with nitrogen can make the grain barn, not rot, do not germinate, long-term preservation. Nitrogen storage and preservation of fruits, vegetables and tea are also the most advanced methods. This method can make the fruits and vegetables, such as lettuce in high nitrogen oxygen environment, slow down is in a dormant state, The new supersedes the old., which can inhibit ripening, long-term preservation. According to the experiment, the apple stored in nitrogen is still crisp and refreshing after 8 months.
In the production of electronic components and semiconductor components, it is necessary to use more than 99.999% purity nitrogen as protective gas. At present, Gao Chundan has been used as carrier gas and protective gas in the production process of color TV picture tube, large scale integrated circuit, liquid crystal and semiconductor silicon wafer.