4 in stock
These N99 (FFP3) 5-layer masks are unvalved filtering masks.
Are the masks re-usable?
These masks are not marketed as re-usable masks because they are considered dust masks are usually intended for use in a construction environment. 8 hours use is the official line in a hospital.
However, the OSHA (Occupational Safety and Health Administration) directive indicates that a mouth mask can be reused as long as it “maintains its structural and functional integrity and the filter material is not physically damaged or soiled”.
They are recommended for respiratory system protection and meet the guidelines set by the World Health Organisation (WHO).