Specifications - Fluid resistance (against bio-fluids & droplets) 80mmHg (ASTM F1862) - BFE (bacterial filtration efficiency) ≥ 98% (ASTM F2101) - PFE 0.1μ (particulate filtration efficiency) ≥ 98% (ASTM F2299) - Low breathability resistance (ΔP) : ≤ 3.0 mmH2O/cm² (4.4.1.2 - MIL- M 36954C) - It is made of melt blown filter fabric with bacterial filtration efficiency [BFE] over 98%. - Premium Medical Mask 3ply / 4ply is made of extra soft premium non woven which can helps to reduce skin irritation from long wear with bacterial filtration efficiency [BFE] over 98%. - Colour: Light Blue