Size/maneuver | Sleeve | Tissue | Hand | Surgical mask | Control n = 44 |
---|
N <0.5 μm | 4.13E + 07 | 6.22E + 07 | 5.13E + 07 | 4.40E + 07 | 1.99E + 07 |
0.5 μm < N <1.0 μm | 5.36E + 05 | 5.78E + 05 | 5.29E + 05 | 3.40E + 05 | 3.58E + 05 |
1.0 μm < N <2.5 μm | 7.76E + 04 | 8.47E + 04 | 5.50E + 04 | 5.05E + 04 | 4.16E + 04 |
2.5 μm < N <10 μm | 8.52E + 04 | 1.12E + 05 | 6.64E + 04 | 6.53E + 04 | 4.18E + 04 |
10 μm < N < 100 μm | 4.98E + 03 | 6.10E + 03 | 4.66E + 03 | 6.12E + 03 | 2.64E + 03 |
N >100 μm | 0 | 0 | 0 | 0 | 0 |
- Unit: # droplets/cc/second.
- Control: Size and number of droplets expelled by healthy non-smokers when coughing. Data acquired from an expanding unobstructed cough aerosol.
- CE data: The short distance from the mouth to the barrier prevents the expansion of the cough plume, and the shape of the barrier redirects a more concentrated flow across the measurement zone. The non-expanding concentrated plume would bring droplets travelling in the periphery closer to the center of the plume increasing the number of droplets accounted for.
- Particles deposited within the fiber network of tissues and surgical masks during the manufacturing process might be dislodged when coughing, hence increasing the number of items detected by the system.