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30 days return guaranteeDisposable facemask for protection against dust and aerosols. - Differential pressure ΔP < 60 Pa/cm2 according to EN 14683- Antibacterial filter BFE > 98% 3,0 micron - Antiparticle filter (PFE) PFE > 98% 0,1 micron - Fluid resistance ≥ 16 kPa Composed of 4 layers: 1. Soft and coloured hydrophobic TNT. 2. Fluid resistant polymeric filter. 3. Antibacterial filter (BFE) and antiparticulate filter (PFE). 4. Hydrophilic TNT comfortable on the inside.