The effect of wearer stubble on the protection given by Filtering Facepieces Class 3 (FFP3) and Half Masks (UK HSE)
HSE Inspectors routinely come across workers with various degrees of stubble growth using respiratory protective masks despite guidance to the contrary. This research studied the effect of 0-7 days stubble growth on the protection given by FFP3 filtering facepieces and half masks. Fifteen male volunteers took part, each testing four masks. For most, three different […]
