ASTM International (ASTM), an international standards organization that promulgates consensus-based standards in a broad variety of areas, recently published and released F3502−21 Standard Specification for Barrier Face Coverings.

ASTM undertook development of F3502−21 in response to the global COVID-19 pandemic. This is the first ASTM standard to address masks that are classified as non-medical.  As a public service, ASTM is providing access to the standard at no cost.

F3502−21, as well as the complete library of COVID-19 related standards that ASTM is providing free of charge, can be accessed here: https://www.astm.org/COVID-19/.