What is the purpose of a fit test for a respirator?

The primary purpose of a fit test for a respirator is to ensure a full seal on the face. A fit test assesses how well the respirator conforms to the user’s face and provides an airtight seal between the respirator and the wearer’s skin. Achieving a proper seal is crucial because any gaps can allow contaminated air to enter the respirator, undermining its protective function.

Fit testing is essential in environments with exposure to hazardous air contaminants, as it verifies that the selected respiratory protection will effectively filter out harmful substances. There are two main types of fit testing: qualitative and quantitative, both designed to ensure the user is adequately protected while wearing the device.

While comfort is an important factor when selecting personal protective equipment, the primary focus of fit testing is the integrity of the seal, not just how the respirator feels during use. In addition, troubleshooting techniques and verifying the type of filter used address different aspects of respirator safety and maintenance, which are not the main focus of the fit test itself.