Level 1 High Filtration Ear Loop Masks 50/Box
- Bacterial filtration efficiency: ≥95%
- Sub-micron particulates filtration efficiency at 0.1 micron: ≥95%
- Differential pressure (breathability): <4.0 mm H₂O/cm²
- Resistance to penetration by synthetic blood (minimum pressure for pass results): 80 mm Hg
- Flame spread: Class 1