RPE Face Fit Testing
In the United Kingdom (UK), face fit testing is a crucial process that helps ensure the effectiveness of respiratory protective equipment (RPE) in preventing the inhalation of harmful airborne substances. It is a legal requirement under the Control of Substances Hazardous to Health (COSHH) Regulations and the Control of Asbestos Regulations, which aim to protect workers from hazardous substances in the workplace.
A technique called face fit testing is used to evaluate how well the RPE’s facepiece seals against the wearer’s face. In order to reduce the possibility of contaminated air escaping into the mask and being inhaled by the wearer, the test’s goal is to make sure the RPE forms an airtight seal. This is crucial when dealing with potentially harmful compounds, such as airborne dust, gases, and particles, which can result in major health problems, such as cancer and respiratory disorders.
What is included
- HSE-compliant testing
- Fit2Fit-trained testers
- Qualitative face fit testing
- Certificate of test issued
- Pre-use mask checks
- Full user instruction
- On-site testing available
- Group bookings accepted
Anyone who wears tight-fitting RPE — including disposable FFP3 masks or reusable half masks — must undergo face fit testing to ensure the equipment seals properly. This applies across a wide range of industries where workers may be exposed to hazardous substances.
Common sectors include:
- Construction and demolition
- Healthcare and dentistry
- Engineering and manufacturing
- Waste management and cleaning
- Laboratories and chemical handling
If your employees wear tight-fitting masks as part of their work, testing is legally required under COSHH regulations.
We carry out qualitative face fit testing, a method recommended for half-mask and disposable respirators. This involves the wearer performing a series of exercises while exposed to a harmless test agent (bitter or sweet-tasting aerosol) to check for leaks.
During the session:
- We inspect the RPE for suitability and condition
- The wearer is trained in correct fitting and use
- Movement and speech exercises are completed to detect seal integrity
If the wearer cannot detect the solution, the fit is considered adequate.
Face fit testing is not a one-time task. Re-testing is required when:
- A new mask type or model is introduced
- The wearer’s facial features change (e.g. significant weight loss, dental work, facial hair)
- There are concerns about the existing fit
HSE recommends regular reviews and re-testing as part of your ongoing respiratory protection programme. Our team can help you schedule appropriate intervals and ensure continued compliance.
Protecting your staff, the right way
Face fit testing isn’t just a regulatory requirement — it’s a vital step in protecting your employees from long-term health risks. Without a proper seal, even the highest-grade mask offers little to no protection against airborne hazards.
At The First Principle, we make compliance straightforward. Our trained team ensures every test is carried out professionally, with clear guidance and proper documentation. We help you meet your legal obligations while promoting a culture of safety in your workplace.
Why choose us for face fit testing?
We know how important respiratory protection is — and we make sure it’s done right. From compliance to care, our face fit testing service delivers confidence, every time.
Experienced
Our testers are fully trained through Fit2Fit-accredited centres and follow all HSE guidance to the letter.
Compliant
We help you meet your legal duties under COSHH and other safety regulations — with full certification provided.
Convenient
On-site testing available across multiple regions, with group bookings and flexible scheduling.
Supportive
We go beyond testing with clear advice, retest reminders, and training to ensure masks are worn and maintained correctly.
Established company
When to contact The First Principle
- You’re providing tight-fitting RPE to staff
- You’ve introduced a new mask model or brand
- You’ve hired new team members
- You’ve never had face fit testing done
- Your current certificates are out of date
- You want to stay compliant during audits or inspections
- You’re managing a high-risk work environment
Request your face fit testing today
Ensure your team is properly protected and fully compliant.
Get in touch with The First Principle to arrange professional, HSE-compliant face fit testing at your site or ours — with certified results and expert support every step of the way.
Your questions answered
Common questions
Who needs face fit testing?
Anyone who wears tight-fitting RPE, such as disposable FFP3 masks or reusable half masks, must be face fit tested to ensure the mask forms a proper seal.
Is face fit testing a legal requirement?
Yes. It’s required under the Control of Substances Hazardous to Health (COSHH) Regulations and the Control of Asbestos Regulations to ensure suitable and effective RPE is used.
What type of face fit testing do you offer?
We offer qualitative face fit testing, ideal for disposable and half-mask respirators. It uses a bitter or sweet solution to check for leaks during various movements.
How often should face fit testing be repeated?
Testing should be repeated if a new mask model is used, the wearer’s facial features change, or at regular intervals — usually every 1–2 years.
Do you offer on-site testing?
Absolutely. We provide on-site testing for businesses across Greater London, the South East, West Midlands, and East Midlands — with group bookings available.
