Face Fit testing is a method of ensuring that a facepiece or mask is tight-fitting and seals adequately to the wearer’s face. The performance of tight-fitting facepieces depends on achieving continuous contact between the wearer’s skin and the seal of the mask. An inadequate fit will significantly reduce the protection provided to the wearer and reduction in protection may lead to immediate or long-term ill-health.
A correct fitting facepiece is vital at all times to prevent exposure and the Face Fit test also provides verification that the wearer can put the facepiece on correctly.
Faces vary significantly in shape and size so it is unlikely that one particular type or size of mask will fit everyone. The Face Fit test will identify whether facepieces are suitable for use by a particular wearer or advise if alternative facepieces need to be tried.
Types of Face Fit test
The method of Face Fit testing depends on the type of facepiece.
Testing on filtering facepieces (disposable respirators) and reusable half masks are carried out using a qualitative method also known as a taste test.
Testing on full-face facepieces is carried out using a quantitative method (portacount).
Filtering face mask
– a qualitative method
Half mask –
a qualitative method
