Which method allows sterilization in 2-3 hours at 120 F?

Ethylene oxide sterilization is a method that uses ethylene oxide gas to achieve sterilization at lower temperatures, around 120°F, which is particularly effective for heat-sensitive medical equipment. This method allows for the sterilization process to occur within 2-3 hours, making it advantageous for items that cannot withstand high temperatures, such as plastics and certain electronics.

The ethylene oxide gas works by alkylating the DNA and proteins within microorganisms, effectively killing bacteria, viruses, and fungi. This makes it an excellent choice for a wide range of medical instruments while maintaining the integrity of the materials being sterilized.

In contrast, other sterilization methods like steam heat and dry heat typically require higher temperatures or longer exposure times and are not suitable for all types of materials. Steam heat sterilization usually operates at temperatures higher than 120°F and may take longer than 2-3 hours, while dry heat sterilization also requires elevated temperatures and extended durations to achieve effective results. Radiation sterilization, while effective, is typically not associated with the specific lower temperature and time frame listed in the question.