Standard Specification for Performance of Materials Used in Medical Face Masks
The right mask is an ASTM-rated mask.
MEDICAL FACE MASK TESTS AND REQUIREMENTS
FDA ASTM F2100 Level 3 Surgical Mask High Quality Level 2 Medical Face Mask ASTM Level 3 USA Tie Earloop Face Mask for Hospital Doctor Nelson Report 510K FDA - China 510K
Amazon.com: Crosstex Ultra Sensitive FogFree Face Masks w/SecureFit Tech White Box of 40 : Industrial & Scientific
Amazon.com: Crosstex GCPLVSF Procedural Ear Loop with Secure Fit Technology, Lavender (Pack of 500) : Industrial & Scientific