What is not a common cause of instrument corrosion?

The use of an ultrasonic cleaner is not a common cause of instrument corrosion because these devices are specifically designed to aid in the cleaning of instruments without causing damage or promoting corrosion. They use high-frequency sound waves to agitate a cleaning solution, which helps remove debris from the surfaces of instruments without abrasive actions that could lead to corrosion.

In contrast, corrosive chemicals, malfunctioning autoclaves, and tap water can contribute to the degradation of instruments if not managed properly. Corrosive chemicals can react with metals, leading to corrosion. A malfunctioning autoclave may fail to adequately sterilize and dry instruments, creating a moist environment that promotes corrosion. Tap water can contain minerals and impurities that, over time, cause corrosion if instruments are not dried properly after washing.