Safety Trained Supervisor in Construction (STSC) Practice Exam 2025 - Free STSC Practice Questions and Study Guide

The primary goal of fit testing for respirators is to ensure that the respirator forms a proper seal on the user. A good seal is essential for the effectiveness of a respirator because any gaps or leaks can allow contaminated air to enter, compromising the protection it is supposed to provide. Fit testing measures how well the respirator fits the user's face, ensuring that it minimizes any potential exposure to airborne contaminants.

While factors like comfort level, training certification, and efficiency in various environments are important considerations in the overall use of respirators, they do not address the critical aspect of fit. A properly fitted respirator can provide adequate protection even in challenging conditions, but if the seal is not correct, the risk of inhalation of harmful substances increases significantly. Therefore, fit testing is crucial in a safety program to protect workers' health in environments where respiratory hazards exist.