Table II.
Flammability Class of N95 Respirators, Surgical N95 Respirators, Surgical Masks, and other Fabric Materials
| Respirator, PPE and Fabric Material | Weight (g/m2) | Average Burn Time (sec) | Flammability Class |
|---|---|---|---|
| N95 FFRs (11) | 140-469 | DNI (11) | 1 |
| Surgical N95 FFRs (8) | 98 - 502 | DNI (7) | 1 |
| 7.8 (1) | |||
| Surgical Masks (7) | 59 – 86 | DNI (5) | 1 |
| 5.7-6.7 (2) | |||
| 100% Cotton | 81.8 | 14.2 | 1 |
| 100% Cotton Bubble Gauze | 52.2 | 11.53 | 1 |
| 100% Cotton Harem Cloth | 35.6 | 3.78 | 1 |
| 100% Cotton Voile | 33.2 | 5.14 | 1 |
| Double Cotton Fabric | 17.3 | 2.5 | 3 |
| 100% Linen | 130 | DNI | 1 |
| 100% Linen | 92.7 | 6.95 | 1 |
| 100% Hemp Fabric | 203 | DNI | 1 |
| Cheesecloth | 84.6 | 22.9 | 1 |
The number in parentheses represents the number of models tested in the study.
DNI - did not ignite