1Pc/Bag
50 Pcs/Box
​FDA/CE/EUA Approved
Technical Specifications
Standard GB2626-2006 
Filter efficiency ≥ 95% 
Flow rate: 85 L/min
Total inward leakage (TIL)* : ≤ 8% leakage (arithmetic mean)
Inhalation resistance: ≤ 350 Pa
Exhalation resistance: ≤ 250 Pa
Exhalation valve leakage requirement: Depressurizatio n to 0 Pa ≥ 20 sec
Force applied: -1180 Pa
CO2 clearance requirement: ≤ 1%
Features
Outer Layer: Non-Woven fabric, 3D design, blocking outside dust
Filter Layer: Anti-Dust, Anti-Flu, Anti-Allergy
Inner Layer: Skin-friendly lining fabric, no irritation to the skin, comfortable for long wearing