Which of the following is NOT a method of sterilization?

Ultraviolet light is not classified as a method of sterilization. While UV light is effective in disinfecting surfaces and air by inactivating microorganisms and preventing their growth, it does not achieve complete sterilization, which requires the destruction of all forms of microbial life, including bacterial spores.

In contrast, autoclaving uses high-pressure steam to kill all forms of microorganisms, making it a reliable sterilization method. Dry heat also achieves sterilization by using high temperatures to eliminate pathogens without moisture. Chemical solutions, depending on their composition and concentration (like hydrogen peroxide or formaldehyde), can also effectively sterilize instruments when used properly. Understanding the distinction between disinfection and sterilization is crucial in infection control practices, as it ensures proper techniques are employed for different situations.