Name one method of physical sterilization.

The correct method of physical sterilization is steam sterilization. This technique utilizes steam under pressure to eliminate all forms of microbial life, including bacterial spores. Steam sterilization is a widely accepted and effective method for sterilizing surgical instruments, medical devices, and laboratory equipment. The high temperature achievable with steam, typically around 121-134 degrees Celsius, combined with the pressure, results in rapid penetration of steam into materials, ensuring thorough sterilization.

In contrast, chemical sterilization involves the use of chemical agents to kill microorganisms, while radiation sterilization uses ionizing radiation such as gamma rays or electron beams for sterilization purposes. Ultrasonic sterilization generally refers to cleaning and dislodging particles using ultrasound waves, and it is not classified as a physical sterilization method. Understanding these distinctions helps in identifying the correct methods to achieve sterilization in healthcare settings.