ASTM International recently approved a new performance standard that will tell consumers just how much protection their cloth face masks offer. Some face coverings like N-95 respirators and surgical masks must meet certain filtration requirements enforced by government agencies like the U.S. Occupational Safety and Health Administration (OSHA) and the U.S. Food and Drug Administration (FDA). But, until recently, other masks like reusable gaiters and cloth face coverings had no performance standards whatsoever, making it impossible for consumers to judge how protective their masks were or to compare one mask to another.
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