Which type of respiratory fit testing relies on individual determination of the respirator's fit?

Qualitative fit testing is a subjective method where the individual wearer assesses the fit of the respirator based on their sensory experience. This type of testing typically uses specific test agents, such as a bitter or sweet solution, to determine whether the wearer detects the substance inside the mask, indicating a poor fit. The reliance on personal perception means that individuals determine for themselves if the respirator is fitting correctly, which makes this method individual-centered.

In contrast, quantitative fit testing employs objective measurements and is conducted using specialized equipment that quantifies the amount of leakage around the respirator. While standardized and operational might refer to broader approaches or conditions but do not specifically address the individual's sensory experience in fit testing. Therefore, qualitative testing is uniquely focused on the individual's direct assessment of fit, which highlights its role in ensuring that respirators provide adequate protection by emphasizing personal feedback.