The International Society for Respiratory Protection

NIOSH Listing of masks conforming to the ASTM F3502-21 and NIOSH Requirements

Earlier in the year, ASTM International released a new standard, ASTM 3502-21 Standard Specification for Barrier Face Coverings. This web page provides a table of barrier face coverings (BFCs) and Workplace Performance/Performance Plus masks that conform to the ASTM F3502-21 standard and NIOSH requirements.

The listing may be found at FaceCoverings (

Note that these products were not tested by NIOSH.  

The standard was developed by ASTM’s committee on personal protective clothing and equipment (F23). 

The new standard (F3502) is intended to apply to the general public and workers and includes specific requirements for barrier face coverings including design and general construction criteria, particle filtration efficiency levels, sizing and fit testing criteria, labeling instructions, and guidance on cleaning and recommended periods of use. 

The standard is available at  This standard was developed with the input of several respiratory protective device experts and medical face mask experts.  This is the first ASTM standard to address this category of PPE.  The Introduction of the standard clearly defines its scope.  It states that 'this neither a medical face mask...nor a respirator...'