Methods of obtaining sterile air in pharmaceutical industry can be roughly divided into two categories:
1, sterilization
Protein denaturation of bacteria in air can be achieved by heating (dry heat, wet heat), chemical reagents (such as formaldehyde and cyclohexane oxide), ozone and radiation (such as ultraviolet lamp irradiation).
Step 2 disinfect
Use filter media (such as various air filters and high efficiency filters) or electrostatic dust removal methods to capture and intercept dust and miscellaneous bacteria in the air.
In fact, industrial sterilization methods are often not single, but a combination of the two. For flowing air (such as HVAC system and compressed air), filter media is commonly used to sterilize, and for air in static environment, sterilization method is commonly used to sterilize aseptic room, culture room, transmission window and clothes.