Certification Board for Sterile Processing and Distribution (CBSPD) Sterile Processing Technician Practice Exam 2025 - Free Sterile Processing Technician Practice Questions and Study Guide

The final stage in manufacturing a surgical grade instrument is passivation. This process is essential because it enhances the corrosion resistance of the instrument, which is critical in a sterile environment where exposure to bodily fluids and other corrosive elements can occur. Passivation involves treating the instrument with acid solutions to remove free iron and other contaminants from the surface, allowing a protective oxide layer to form. This layer acts as a barrier, preventing rust and ensuring the longevity and safety of the instrument during surgical procedures.

While polishing contributes to the final appearance and may help in maintaining a certain level of hygiene by creating a smooth surface, it is not the last step in ensuring functional integrity. Sharpening improves the cutting edges of surgical instruments, which is very important but occurs before the final preparation stage. Assembly might refer to putting together instrument parts, but the overall protective quality provided by passivation is the crucial final step before the instruments are packaged for sterilization and use.