Table 1.

Reprocessing and reuse of N95 masks: exclusion criteria, organized by the parties concerned

Population	Exclusion criteria
For healthcare workers	Model other than N95 or FFP2
	Presence of stain(s) or soil of any type
	Any visible damage to the mask
	Any alteration of how the mask attaches/ is held in place
	Any deformation or physical alteration of the mask
	Maximum number of sterilization cycles reached (according to inscription on the mask)
For the personnel in charge of preparing the masks for disinfection/reprocessing	All of the preceding criteria
	Presence of mold/mildew (either visible or by odor)
	Inadequate labeling: absence or illegibility of labeling on the mask, present on the wrong part of the mask/written with the wrong type of marker
	Presence of hair on the mask
For the personnel in charge of organizing and sorting the masks after disinfection OR for the healthcare workers receiving the masks after disinfection	All of the preceding criteria
	Any uncertainty of who the mask belongs to
	Any uncertainty concerning the number of disinfection cycles