OSHA’s Respiratory Protection Standard (29 CFR 1910.134) requires that employees be both medically cleared through a medical evaluation and fit tested before wearing a respirator, as well as on an annual basis, if your facility's air quality has been tested and respiratory protection is needed. If respirators are not required (due to air testing results) but you require an employee to wear a respirator, then fit testing must also be completed.
In addition, fit tests should be performed whenever a different size, style, model, or make of respirator is used or when any facial changes occur that could affect fit, such as significant weight fluctuation or dental work.
Conney Safety provides Fit Testing Services that will help ensure your facility meets these requirements.
Qualitative Fit Test (QLFT)
A qualitative fit test (QLFT) may only be used to fit test negative-pressure, air-purifying respirators, as long as they’ll only be used in atmospheres where the hazard is at less than 10 times the permissible exposure limit (PEL).
QLFT is pass/fail and relies on the user’s senses using one of four OSHA-accepted test agents:
- Saccharin (sweet taste); can test respirators with a particulate filter of any class.
- Bitrex® (bitter taste); can also test respirators with particulate filters of any class.
- Irritant smoke (involuntary cough reflex); only for testing respirators with level 100 particulate filters.
Quantitative Fit Test (QNFT)
A quantitative fit test (QNFT) can be used to fit test any tight-fitting respirator. It involves using an instrument to measure leakage around the face seal and produces a numerical result called a “fit factor.”
There are three OSHA-accepted QNFT test protocols, including Controlled Negative Pressure (CNP), which we use when performing our QNFTs.
Below is some information on our QNFT process and how we measure for fit:
- CNP uses a test that creates a vacuum by temporarily cutting off air.
- QNFTs use similar exercises as QLFTs, plus an additional test where the subject breaks the seal and refits the respirator to the face.
- A fit factor of at least 100 is required for half-mask respirators and a minimum fit factor of 500 for a full face piece negative-pressure respirator.
Conney Safety has a set fee for single individuals to be fitted in our showroom. Cost-effective fitting can also be provided for your employees at your location at an hourly rate.
Download Fit Testing Flyer