Exfiltration
Exfiltration of Particles - Particles Escaping Mask Filtration after Coughing
The table below compares exfiltration of particles for the surgical mask, N95 with and without 1-way out-flow valve, and the ION Gaiter. Better exfiltration results were expected for the ION Gaiter due to favorable factors in its construction: 1) Tighter fit wrapping around the 360°degree circumferences of the neck and face, 2) Use of somewhat hydrophilic fabrics offering better adsorption of liquid aerosols compared to hydrophobic fibers used in N95’s, 3) Better breathability, 4) Larger filter surface area.
|
Device |
0.3µ Particles /15L |
1-10µ Particles /15L |
% Filtered at 0.3µ |
% Filtered at 1-10µ |
|
No mask |
23369 |
8322 |
NA |
NA |
|
Surgical mask |
5413 |
1360 |
76.8 |
83.7 |
|
N95 mask with 1-way valve |
2906 |
819 |
87.6 |
90.2 |
|
N95 mask without 1-way valve |
3130 |
757 |
86.7 |
90.9 |
|
ION Gaiter |
1607 |
455 |
93.1 |
94.5 |