Bacterial filtration efficiency: BFE≧98% (ASTM 2101 Level 1 & 2); Particulate filtration efficiency: PFE≧98% (ASTM F2299 Level 1 & 2); Synthetic Blood Penetration: Pass at 80 & 120mmHg (ASTM F1862 Level 1 & 2); Flammability: Class 1 (16 CFR 1610); Differential Pressure: <5.0 mm H₂O/cm square (EN 14683:2019)