CRCST Practice Exam 2026 - Free CRCST Practice Questions and Study Guide

Passivation is the correct answer because it is the chemical process applied during the instrument manufacturing process that provides a corrosion-resistant finish on instruments. Passivation creates a protective oxide layer on the surface of the metal instrument to prevent corrosion and enhance the longevity of the instrument.

Anodization is a process that involves creating an oxide layer on metals such as aluminum through electrolysis but is not commonly used for instrument manufacturing finishes.

Galvanization is the process of applying a protective zinc coating to steel or iron to prevent rust and corrosion, which is different from the process used for instrument finishing.

Vulcanization is a chemical process for converting natural rubber or related polymers into more durable materials; it is not used for providing a corrosion-resistant finish on metal instruments.