Which of the following is NOT a form of sterilization?

Cold storage is not a form of sterilization. Sterilization refers to the process of eliminating all forms of microbial life, including bacteria, viruses, fungi, and spores. The methods of sterilization involve the use of specific conditions or agents to achieve this goal effectively.

Chemical sterilization involves using chemical agents to eliminate microorganisms. The use of substances like ethylene oxide or hydrogen peroxide gas is common in this method.

Wet heat sterilization typically refers to autoclaving, which uses steam under pressure to achieve high temperatures that kill pathogens and spores.

Dry heat sterilization employs high temperatures without moisture, often using hot air ovens to sterilize materials.

While cold storage may inhibit microbial growth and preserve materials, it does not kill or eliminate all microorganisms and thus does not meet the criteria for sterilization.