Level 1
Features of ASTM Level 1 Mask:-
Bacterial filtration efficiency |
≥95% |
Sub-micron particulates filtration efficient at 0.1 micron |
≥95% |
Differential pressure, mm H20/cm2 (Breathability) |
<4.0 |
Resistance to penetration by synthetic blood, minimum pressure in mm Hg for pass resuls |
80 mm Hg |