ASTM F2100 Specification for Performance of Materials Used in Medical Face Masks Covers testing and classification of medical face masks that are used in providing healthcare services such as surgery and patient care.The specification requires the following tests which we perform at our Kinectrics ISO 17025 accredited labs:ASTM F2299 Particulate Filtration Efficiency (PFE).ASTM F2101 Bacterial Filtration Efficiency (BFE).F1862 Resistance to Synthetic Blood Penetration.Differential Pressure (Breathability/ΔP) (EN 14683).Flammability/Flame Spread (16 CFR Part 1610). SpecificationLevel 1Level 2Level 3 Particulate Filtration Efficiency≥ 95%≥ 98%≥ 98%Differential Pressure<5.0mmH2O/cm²<6.0mmH2O/cm²<6.0mmH2O/cm²Resistance to penetration by synthetic blood (min. pressure for pass)80 mm Hg120 mm Hg160 mm HgFlame SpreadClass 1Class 1Class 1