We are fit2fit accredited for both qualitative & quantitative face fit testing:
Our face fit testers are trained, competent and accredited for both qualitative (taste test) & quantitative (portacount machine) face fit testing. We can test all types of tight fitting respiratory protective equipment: Full mask respirators, SCBA, reusable half masks, disposable masks etc.
There are two types of face fit testing, qualitative and quantitative. Both are valid and approved methods for face fit testing and each method has its uses and limitations.
Quantitative testing can be used to fit test all types of tight-fitting masks including disposable, half and full face masks. Quantitative tests give an objective assessment of facial fit and provide a direct numerical result called a Fit Factor.
The most widely-used quantitative method for RPE fit testing is the Particle Counting Device method, a title ascribed to the TSI Portacount.
The Portacount measures the number of ambient particles inside and outside a facepiece and provides a numerical result which is the ratio of the two over a given test period.
Qualitative tests rely on the wearer’s subjective assessment of faceseal leakage. These methods, during a set of test exercises, use the wearer’s sense of smell or taste to detect faceseal leakage of a test agent.
Qualitative tests are subject to problems with sensitivity, lack of objectiveness and inability to provide a numerical result.
For these reasons qualitative tests can only be employed for fit testing of filtering facepieces (disposable masks) and half masks, not full face masks.
Don’t worry if you are not sure of which test you need, our fit testers are accredited in both methods and they will always use the method that is suited to your needs.