JSP says hundreds, if not thousands, of pounds can be saved over a matter of months by using the system, which estimates replacing the filters every five days rather than after just one use.

Apart from cost savings, a Force 8 half-mask with PressToCheck enables the wearer to determine whether a proper face fit has been achieved in just three steps: 

•  Fit – don the mask

•  Press – squeeze the filters together to create a seal

•  Check – inhale and feel the mask depress when an effective face fit is achieved, adjusting the mask if necessary.