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 History
ASTM F3502-24
$34.00 $69.00
ASTM F3502-23a
$41.00 $83.00
ASTM F3502-23
$38.00 $76.00
ASTM F3502-22
$36.00 $72.00
ASTM F3502-21
$36.00 $72.00
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ASTM F1429-99(2009)
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ASTM A240/A240M-09
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ASTM D4063-99(2009)
$26.00 $52.00