Reusable 5-Ply KN95 Virus Protection Respirator Valve Face Mask

• Anti-virus face mask respirator. The mask removes 95 percent of air particles at least 0.3 microns in diameter or larger or FFP3 meaning the mask will only leak a maximum of 5 percent of air and filters 99 percent of air particles at 0.3 microns. Including dust, smoke or viruses.
• Thick layers of protection effectively resist the invasion of harmful substances, protecting against virus, dust, liquids and weather.
• Seal the bridge of the nose improves the adhesion of the item.
• Comfortable to wear: No falling off, comfortable to wear and the mask is designed with high strength. The mask is wide enough to cover the nose, mouth and face, it fits for most faces.
• Respirator valve: Independent one-way breathing valve effectively reduces respiratory resistance.

Specifications:

• Air mass flow: 85L/min
• Aerosol-particle: NaC1
• Aerosol-concentration: 15mg/m³
• Temperature: 23.0℃
• Relative humidity: 35.8%
• Filter efficiency: ≥95.0(KN95)
• Inhalation resistance(Pa): ≤350(GB 2626-2006 6.5)
• Expiratory resistance(Pa): ≤250(GB 2626-2006 6.6)
• Material: Non-woven fabrics
• Quantity: 50pcs in one box