Table 2. Quantitative fit testing results of N95 masks after repeat decontamination cycles.
| PortaCount Result (normal & deep breathing exercises only) | |||||
|---|---|---|---|---|---|
| Groups | Masks | ||||
| Control | 3M 1860 | pass | |||
| 3M Aura 1870 | pass | ||||
| 3M Vflex 1804S | pass | ||||
| AO Safety 1054S | pass | ||||
| 3M 8210 | pass | ||||
| 3M 9210 | pass | ||||
| # of cycles | |||||
| 1 | 3 | 5 | 10 | ||
| Autoclave | 3M 1860 | pass | fail | fail | fail |
| 3M Aura 1870 | pass | pass | pass | pass | |
| 3M Vflex 1804S | pass | pass | pass | pass | |
| AO Safety 1054S | pass | pass | pass | pass | |
| 3M 8210 | pass | fail | fail | fail | |
| 3M 9210 | pass | pass | pass | pass | |
| 1 | 3 | ||||
| EtO | 3M 1860 | pass | pass | ||
| 3M Aura 1870 | pass | pass | |||
| 3M Vflex 1804S | pass | pass | |||
| AO Safety 1054S | pass | pass | |||
| 1 | 2 | 5 | 10 | ||
| LT-HPGP | 3M 1860 | pass | fail | fail | fail |
| 3M Aura 1870 | pass | fail | fail | fail | |
| 3M Vflex 1804S | pass | fail | fail | fail | |
| AO Safety 1054S | pass | pass | fail | fail | |
| 3M 8210 | pass | fail | fail | fail | |
| 3M 9210 | pass | fail | fail | fail | |
| 1 | 3 | 5 | 10 | ||
| VHP | 3M 1860 | pass | pass | pass | pass |
| 3M Aura 1870 | pass | pass | pass | pass | |
| 3M Vflex 1804S | pass | pass | pass | pass | |
| AO Safety 1054S | pass | pass | pass | pass | |
| 1 | 3 | 5 | 10 | ||
| PAF | 3M 1860 | pass | pass | pass | pass |
| 3M Aura 1870 | pass | pass | pass | pass | |
| 3M Vflex 1804S | pass | pass | pass | pass | |
| AO Safety 1054S | pass | pass | pass | pass | |
| 1 | 3 | 5 | 10 | ||
| UV-C (1120 mJ/cm2) | 3M 1860 | pass | pass | pass | ND |
| 3M Aura 1870 | pass | pass | pass | ND | |
| 3M Vflex 1804S | pass | pass | pass | ND | |
| AO Safety 1054S | pass | pass | pass | ND | |
| 3M 8210 | pass | pass | pass | ND | |
| 3M 9210 | pass | pass | pass | ND | |
| 1 | 3 | 5 | 10 | ||
| Moist Heat (75°C & 22% RH X 3 hr) | 3M 1860 | ND | pass | ND | pass |
| 3M Aura 1870 | ND | pass | ND | pass | |
| 3M Vflex 1804S | ND | pass | ND | pass | |
| AO Safety 1054S | ND | pass | ND | pass | |
| 3M 8210 | ND | pass | ND | pass | |
| 3M 9210 | ND | pass | ND | pass | |
PAF: Peracetic acid dry fogging system, VHP = vaporous hydrogen peroxide, EtO = ethylene oxide.
LT-HPGP: Low temperature hydrogen peroxide gas plasma.
UV-C: Ultraviolet light-C radiation (254 nm wavelength).