Fig. 6
From: FFP3 respirator face fit testing - what is it all about?

Photograph of the clinician wearing the hoodthe 3M 8833 model FFP3 mask. The solution is sprayed into the hoodwhile the clinician moves their head side to side
From: FFP3 respirator face fit testing - what is it all about?

Photograph of the clinician wearing the hoodthe 3M 8833 model FFP3 mask. The solution is sprayed into the hoodwhile the clinician moves their head side to side