ASTM F3502-21 is primarily intended to help ensure barrier face coverings meeting the stated requirements provide (1) a means of source control for individual wearers by reducing the number of expelled droplets and aerosols from the wearer’s nose and mouth into the air; and (2) to potentially offer a degree of particulate filtration to reduce the amount of inhaled particulate matter by the wearer.
ASTM F3502-21
Original price was: $72.00.$36.00Current price is: $36.00.
Standard Specification for Barrier Face Coverings
ASTM International , 02/15/2021
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