Respiratory protection
Face fit testing
The only HSE-recognised way to be sure a tight-fitting mask actually protects the person wearing it. We test at your site or at our head office in Rochdale.

What is face fit testing?
Make sure the mask really protects
The HSE recognises face fit testing as the only way to confirm that respiratory protective equipment (RPE) properly protects the wearer. A poor seal can let harmful dust, fumes, chemicals or bacteria past the mask, risking serious ill health and enforcement action against the business.
A fit test certificate applies only to that person and that specific make and model of mask. If the mask changes, a new test is needed.

How does it work?
How we fit test
We use qualitative fit testing, the recognised method for disposable filtering facepieces and reusable half masks.
A pass or fail check
The wearer puts on a hood and we release a bitter or sweet test solution. If they can taste it, the mask isn't sealing and the test fails. This method is used for disposable filtering facepieces and reusable half masks.
What's involved?
The face fit testing process
It's straightforward. Wearing your mask, you'll carry out a series of simple movements, similar to those you'd do at work. We use the qualitative (hood and solution) method to check the seal.
To pass, the mask must reach the required level of protection. If it doesn't, the tester will explain why and help recommend a better-fitting alternative.

Protecting everyone
Which masks need a fit test?
Any tight-fitting mask worn to protect against harmful substances must be fit tested.
Tight-fitting RPE
Disposable filtering facepieces (FFP2 / FFP3), reusable half masks and full-face masks all form a seal against the skin and must be fit tested to the individual.
Loose-fitting masks
Loose-fitting RPE and disposable surgical-type masks, such as those used to reduce the spread of COVID-19, don't rely on a face seal and don't require a fit test.
The law & who it applies to
When fit testing is required
If employees are exposed to harmful substances you must provide suitable RPE, and in most cases arrange face fit testing, under:
- Control of Substances Hazardous to Health Regulations 2002 (COSHH)
- Control of Lead at Work Regulations 2002
- Control of Asbestos Regulations 2012
Once mainly used in construction, manufacturing and laboratories, fit testing is now common across many sectors:


Facial hair guidance
You must be clean-shaven
A tight-fitting mask can only seal against clean-shaven skin. Stubble, a beard or any facial hair breaks the seal and lets unfiltered air through, so we can only fit test people who are clean-shaven on the day.
Anyone who wears tight-fitting RPE must stay clean-shaven whenever it's worn. If that isn't practical, ask us about loose-fitting masks or powered hoods as an alternative.

Health. Training. Wellbeing.
Book face fit testing for your team
We can test your team on-site or at our Rochdale head office, and advise on the right RPE if a mask doesn't fit.
