Just completed a short course in Face Fit Testing for face masks.
“face fit training” in relation to face masks, you’re probably referring to fit testing (sometimes called face-fit testing).
It’s a procedure used to check whether a tight-fitting respirator or mask forms a proper seal against your face.
How it works
- You wear the specific mask/respirator you intend to use.
- A trained tester checks that it is positioned correctly and that the straps are adjusted.
- You perform a series of movements and exercises, such as:
- normal breathing
- deep breathing
- turning your head
- moving your head up and down
- talking
- bending over
- walking or jogging in place
- The tester assesses whether the mask maintains a secure seal throughout.
Two main types
Qualitative fit testing
- Uses a test substance that you can taste, such as a bitter or sweet aerosol.
- If you can taste it while wearing the mask, the seal isn’t adequate.
- Generally used for lower-protection respirators.
Quantitative fit testing
- Uses equipment to measure the concentration of particles inside versus outside the mask.
- Produces an objective fit factor.
- Common for higher-protection respirators.
Important point
A mask being the correct size doesn’t necessarily mean it fits your face properly. Facial hair, glasses, scars, face shape, and incorrect strap adjustment can all affect the seal.
For workplace respiratory protection in the UK, face-fit testing is particularly relevant to tight-fitting RPE such as FFP2/FFP3 filtering facepieces.