2020 Best Disposable Medical Surgical Face Mask of 3 Ply ...
Disposable Medical Surgical Face Mask with 3 Ply Filter: Material: 1st layer: 20gsm PP non woven: 2rd layer: 20gsm filter paper: 3th layer: 25gsm PP non woven( ES material available) Testing Standard ASTM F2100 Level 1 BFE > 95%: ASTM F2100 Level 1 PFE > 95%: ASTM F2100 Level 1 Delta P < 4.0: ASTM F2100 Level 1 Fluid Resistance 80 mmHg