Which method is NOT commonly used for sterilization?

Warm air circulation is not a commonly used method for sterilization in medical and laboratory settings. Sterilization requires a process that effectively eliminates all forms of viable microorganisms, including bacterial spores. While warm air circulation can be used for drying purposes, it does not achieve the necessary temperatures and exposure times required to ensure complete sterility.

In contrast, ionizing radiation is an effective sterilization method that uses gamma rays or X-rays to disrupt the DNA of microorganisms, effectively killing them or rendering them incapable of reproduction. Dry heat sterilization involves subjecting items to high temperatures for a specific duration, which denatures proteins and disrupts cellular structure. Liquid chemicals, such as glutaraldehyde or hydrogen peroxide, are also viable options for sterilization, particularly for heat-sensitive instruments, as they possess properties that can inactivate microorganisms.

Understanding these methods is crucial, as the right sterilization method must be selected based on the type of materials being sterilized and the intended use, ensuring safety and effectiveness in medical practice.