| Equivalent CFM | |||||
|---|---|---|---|---|---|
| Ventilation CFM in Classroom | 100 | 250 | 400 | 500 | |
| Leakage % | |||||
| Cloth Mask | .75 | 33 | 83 | 133 | 167 |
| 2-way Cloth | .56 | 78 | 194 | 311 | 389 |
| Surgical | .5 | 100 | 250 | 400 | 500 |
| 2-way Surgical | .25 | 300 | 750 | 1200 | 1500 |
| Non-Fit-Test Respirator | .2 | 400 | 1000 | 1600 | 2000 |
| 2-way NFT Respirator | .04 | 2400 | 6000 | 9600 | 12000 |
| Fit-Tested Respirator | .1 | 900 | 2250 | 3600 | 4500 |
| 2-way FT Respirator | .01 | 9900 | 24750 | 39600 | 49500 |
| Air Cleaning Method | Equivalent CFM |
|---|---|
| Ventilation | 100-500 |
| Filtration | 100-300 each |
| Upper Room UVGI | 1000-2000 |
| Far UV | 1000-40000 |