Table 2:
Collection efficiencies and fit factors for source control devices. Manikin fit factors were measured with the fit tester in N95 mode only (as described in the Discussion). Human fit factors were measured using both the N95 mode and all particle sizes mode.
| Face covering | COUGHING | EXHALATION | Filtration Efficiency (%) | Inhalation airflow resistance (Pa) | Human subject fit factor | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Collection efficiency (%) | Manikin fit factor | Collection efficiency (%) | Manikin fit factor | N95 mode | All sizes | |||||||||||
| mean | SD | mean | SD | mean | SD | mean | SD | mean | SD | mean | SD | mean | SD | mean | SD | |
| 3M 1860 N95 respirator | 98.6% | 0.3% | 198.0 | 3.5 | 99.0% | 0.7% | 132.5 | 78.5 | 99.1% | 0.1% | 72.2 | 8.1 | 163.8 | 56.2 | 45.3 | 10.9 |
| BYD N95 respirator | 82.7% | 2.1% | 25.0 | 11.3 | 95.2% | 0.6% | 113.5 | 122.3 | 99.1% | 0.1% | 150.8 | 14.5 | 147.9 | 33.5 | 54.9 | 7.8 |
| 3M 1818 surgical mask | 86.8% | 6.3% | 26.1 | 26.7 | 91.4% | 2.6% | 27.5 | 12.0 | 92.7% | 0.6% | 48.0 | 7.8 | 78.6 | 92.0 | 9.6 | 5.8 |
| Excellent Artisan procedure mask | 56.3% | 5.8% | 7.4 | 3.4 | 42.0% | 6.7% | 6.1 | 5.5 | 79.7% | 3.6% | 108.0 | 34.3 | 3.3 | 0.7 | 1.7 | 0.5 |
| Hanes cloth mask | 51.7% | 7.1% | 1.3 | 0.1 | 44.3% | 14.0% | 2.3 | 1.1 | 18.8% | 2.7% | 64.1 | 9.5 | 1.7 | 0.5 | 1.0 | 0 |
| EnerPlex mask | 48.0% | 6.7% | 5.1 | 1.3 | 52.6% | 7.3% | 2.5 | 0.4 | 19.9% | 3.9% | 23.8 | 10.7 | 2.1 | 1.2 | 1.8 | 0.7 |
| Craft & Soul mask | 47.4% | 6.2% | 2.5 | 1.2 | 51.2% | 12.2% | 2.3 | 1.0 | 9.7% | 3.9% | 11.4 | 8.2 | 2.0 | 0.5 | 1.3 | 0.5 |
| Lefty mask | 42.3% | 8.1% | 2.4 | 0.7 | 36.3% | 9.9% | 1.9 | n/a | 20.2% | 0.8% | 96.3 | 5.9 | 1.8 | 0.7 | 1.6 | 0.5 |
| Badger dust mask | 71.1% | 3.5% | 5.0 | 0.1 | 61.8% | 5.0% | 3.2 | 0.6 | 36.0% | 9.9% | 92.1 | 1.0 | 2.8 | 1.6 | 1.7 | 0.5 |
| Debrief Me mask w filter | 43.0% | 12.0% | 4.6 | 1.8 | 63.4% | 15.3% | 3.0 | 1.5 | 30.8% | 1.5% | 154.1 | 34.9 | 2.9 | 0.9 | 2.1 | 0.8 |
| Fabrique Innovations mask | 63.2% | 6.2% | 2.1 | n/a | 65.9% | 4.4% | 2.2 | 0.4 | 14.8% | n/a | 61.7 | n/a | 1.4 | 0.7 | 1.1 | 0.3 |
| Besungo sports mask w filter | 65.7% | 6.5% | 4.8 | n/a | 59.9% | 11.9% | 3.2 | 0.3 | 97.8% | 0.3% | 142.7 | 22.9 | 2.7 | 1.7 | 1.9 | 1.4 |
| Inspire mask w filter | 66.5% | 4.5% | 4.3 | 3.0 | 63.1% | 6.4% | 2.7 | 0.5 | 27.1% | 5.1% | 149.8 | 85.4 | 4.0 | 1.4 | 2.4 | 0.5 |
| FKGIONG gaiter 1-layer | 48.1% | 6.7% | 1.7 | 0.5 | 42.9% | 5.5% | 1.5 | 0.2 | 3.3% | 4.3% | 13.1 | 8.0 | 1.1 | 0.3 | 1.0 | 0 |
| FKGIONG gaiter 2-layers | 60.5% | 6.7% | 1.9 | 0.4 | 51.8% | 8.6% | 1.7 | n/a | 7.9% | 0.5% | 23.8 | 8.4 | 1.0 | 0 | 1.4 | 0.5 |
| AXBXCX gaiter 1-layer | 35.4% | 9.5% | 1.7 | 0.1 | 35.3% | 10.3% | 1.4 | 0.1 | 2.7% | 1.1% | 14.4 | 5.7 | 1.3 | 0.7 | 1.0 | 0 |
| AXBXCX gaiter 2-layers | 48.3% | 6.3% | 1.8 | 0.1 | 43.9% | 5.6% | 1.9 | 0.5 | 3.6% | 0.3% | 29.4 | 4.5 | 1.3 | 0.5 | 1.3 | 0.5 |
| Retro gaiter 1-layer | 48.7% | 10.5% | 2.6 | n/a | 55.8% | 6.6% | 2.5 | 0.6 | 2.2% | n/a | 40.2 | n/a | 1.6 | 0.7 | 1.3 | 0.5 |
| Retro gaiter 2-layers | 64.9% | 4.2% | 2.3 | 0.4 | 60.0% | 5.5% | 2.1 | 0.4 | 8.6% | n/a | 69.5 | n/a | 1.7 | 1.0 | 1.7 | 0.5 |
| Givon fleece gaiter 1-layer | 53.5% | 6.3% | 2.1 | 0.5 | 51.4% | 7.0% | 2.3 | 0.8 | 8.4% | 0.8% | 19.3 | 7.4 | 1.0 | 0 | 1.3 | 0.5 |
| L&M Bandana 2-layers | 17.1% | 25.0% | 1.3 | 0.2 | 46.5% | 8.1% | 1.6 | 0.1 | 1.4% | 0.4% | 5.2 | 8.2 | 1.1 | 0.3 | 1.0 | 0 |
| Underwear Bandana/gaiter 1-layer | 40.8% | 7.5% | 6.9 | 7.3 | 37.3% | 10.2% | 1.4 | 0.1 | 3.5% | 1.1% | 19.3 | 8.2 | 1.1 | 0.7 | 1.0 | 0 |