Which method is primarily noted for being low temperature and not corrosive to instruments?

Ethylene oxide is primarily noted for its low-temperature sterilization capability, which makes it particularly suitable for heat-sensitive medical instruments and devices. This method involves using ethylene oxide gas that effectively penetrates various materials, providing a thorough sterilization process without the risk of damage typically associated with higher temperature sterilization methods, such as steam or dry heat.

Additionally, ethylene oxide is non-corrosive to instruments, which is a significant advantage in preserving the integrity and functionality of delicate surgical tools. This characteristic helps ensure that instruments maintain their sharpness and effectiveness over multiple uses, as opposed to other methods that may cause oxidation or corrosion over time.

The other methods tend to involve higher temperatures or harsher conditions that can lead to wear and damage. For instance, steam sterilization involves high heat and moisture, which can be detrimental to certain types of instruments. Gas plasma, while low temperature and also non-corrosive, does not offer the same adaptability as ethylene oxide regarding a wider range of materials. Dry heat sterilization requires higher temperatures for longer periods, which could harm sensitive devices. Thus, ethylene oxide remains the preferred choice for situations demanding low-temperature and non-corrosive sterilization.