Tiêu chuẩn quốc tế
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Số hiệu
Standard Number
ASTM F3502-21
Năm ban hành 2021
Publication date
Tình trạng
A - Còn hiệu lực
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Tên tiếng Anh
Title in English Standard Specification for Barrier Face Coverings
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Số trang
Page 16
Giá:
Price Liên hệ / Contact us
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Phạm vi áp dụng
Scope of standard 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.
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