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Quantitative Respirator Fit Test


A respirator cannot provide protection if it does not fit the user’s face. If the respirator does not fit properly, contaminated air can leak in and the user could breathe in hazardous substances.

A “fit test” tests the seal between the respirator's facepiece and the user. After passing a fit test with a respirator, the user must use the exact same model and size for his/herwork.

Our quantitative respirator fit test uses Quantifit to measure the amount of leakage into the masks. Using the OSHA-approved 5-step Redon Protocol and Controlled Negative Pressure technology, quantitative fit test can be as fast as 3 minutes. It uses air as a challenge agent and does not rely upon the user’s sense of taste, smell, or irritation to detect leakage. With Quantifit, users can be fit-tested in any environment, and no consumables are necessary.

Facial hair, like a beard or mustache, may interfere the seal of the respirator, allowing contaminated air to leak into the respirator facepiece.

User must be fit tested before he/she uses a respirator in the workplace, and must be retested at least every 12 months to make sure that the respirator he/she uses still fits.

A fit test should not be confused with a user seal check. A user seal check is a quick check performed by the wearer each time the user puts on the respirator, to determine if the respirator is properly seated to the face or needs to be readjusted.