• Displacement or conveyance of product from one location to another• As a feed source to fermentation processes• Actuating pneumatic valves in classified and controlled areas and the resulting venting of exhaust gases into processing spaces where product contact may occur• Occupying head space in lyophilization vials, solution vials, ampoules, etc.• Occupying head space or acting as a blanket in a bioreactor• Drying of product in fluidized beds• Drying of product contact equipment surfaces• As a carrier in spray tablet coatings• As a carrier to suspend an API during micronizing or milling steps• As a carrier to pneumatically convey dry powders• As a blanket to provide an inert atmosphere within API vessels• As a blanket or to pressurize WFI storage tanks where the compressed air or process gas comes into contact with WFI water, which may have direct product contact