ASTM Level 3 Face Mask MAASK face mask individual pack/bulk packing ASTM Level III EN 14683 TYPE IIR BFE ≥ 98% PFE ≥ 98% ISO 13485 ISO 13644 Class 8 – Clean Room Made in Hong Kong ASTM Level 1 Face Mask individual pack/bulk packing BFE ≥95% PFE ≥95% ISO 13485 ISO 13644 Class 8 – Clean Room Made in Hong Kong Junior Face Masks ASTM Level II BFE ≥98% PFE ≥98% Produced in Clean Room Bulk packing Made in Hong Kong