What is the required action for cleansing the working parts of instruments?

The required action for cleansing the working parts of instruments involves thoroughly cleansing them with soap and water immediately after each use. This method is critical because it ensures that all organic matter, such as blood and tissue, is physically removed from the instruments, which is essential for effective sterilization. Simply soaking in alcohol does not guarantee that all contaminants are removed, as it may not adequately clean surfaces or crevices. Wiping with a dry cloth is insufficient because it does not remove any biological debris, and disinfecting without prior cleaning is ineffective, as disinfectants require a clean surface to work effectively. Therefore, immediate cleaning with soap and water forms the foundational step in preparing instruments for further disinfection or sterilization, ensuring safety and compliance with health standards.