What is the correct sequence for processing dirty to sterile instruments?

• A. Cleaning, drying, rinsing, packaging, sterilization, storage.
• B. Rinsing, cleaning, drying, packaging, sterilization, storage.
• C. Cleaning, rinsing, drying, packaging, sterilization, storage.
• D. Cleaning, drying, rinsing, sterilization, packaging, storage.

Answer: (C)

The sequence aims to move from removing soil to preserving sterility. Cleaning first eliminates as much debris as possible so the next steps can work effectively. After cleaning, rinsing removes remaining soil and cleaning agents, preventing residues from interfering with sterilization. Drying is essential to prevent moisture that can promote corrosion and compromise the integrity of the packaging and seal. Packaging follows to create a sterile barrier that will hold the sterilized state until use. Sterilization then inactivates all remaining microorganisms inside the wrapped pack. Finally, storage keeps the sterilized instruments in a protected, sterile condition until they are needed. Deviating from this order—such as rinsing before cleaning, or drying before rinsing, or sterilizing before packaging—can leave contaminants, hinder proper sterilization, or compromise the sterile barrier.