Core Application Scenarios：
Sterile Preparation Filling and Protection: Nitrogen filling and displacement before and after filling of water injections, powder injections, large-volume infusions, freeze-dried preparations, etc., to reduce the oxygen concentration in bottles to below 0.5%, preventing oxidative degradation and microbial growth; purity is mostly required to be 99.99%–99.999%.
Biopharmaceutical and Raw Material Protection: Inert gas blanketing for bioreactors and isolation during fermentation to prevent inactivation of active ingredients; inertization of reaction kettles for API synthesis to lower oxygen concentration for reaction control and explosion prevention.
Drying and Clean Environment: Ultra-dry nitrogen protection for freeze-drying processes (dew point ≤ -40℃); positive pressure maintenance in clean rooms/isolators to block external contamination.
Pipeline Purging and Sterility Validation: Online purging and displacement of pipelines and equipment to reduce cross-contamination risks; serving as a VHP sterilization carrier, requiring oil-free and particle-free conditions (<0.1μm).
Packaging and Storage: Nitrogen filling for packaging of tablets, capsules and oxidation-prone pharmaceuticals to extend shelf life; inert protection for finished product storage to inhibit oxidation and mold growth.
