Table I.
Results of Henry Ford Health System respirator fit testing
| FFR model∗ | Saccharin solution aerosol fit test performed | UVC cycles attempted/fit test cycles passed | Passing cumulative UVC dose (3 J/cm2 = 1 cycle) |
|---|---|---|---|
| 3M N95 Respirator—1860 NIOSH TC-84A-0006 | Baseline, cycles 1-6, 15, 20 & 25 | 25/20 | 60 J/cm2 |
| 3M N95 Respirator—9210 NIOSH TC-84A-2669 | Baseline, cycles 1-2 | 2/2† | 6 J/cm2 |
| 3M N95 Respirator—8210 NIOSH TC-84A-0007 | Baseline, cycles 1-2 | 2/1 | 3 J/cm2 |
| Cardinal Health USA N95 R/S Respirator—NIOSH TC-84A-5529 & 5527 (small/regular) | Baseline, cycles 1-2 | 2/1 | 3 J/cm2 |
| Moldex N95 Respirator #2300N95—NIOSH TC-84A-0328 | This N95 respirator passed the baseline fit test on 1 individual. Owing to immediate breakage of straps upon user removal on 2 respirators, testing ceased. | 0 | N/A |
| Moldex N95 Respirator 1511 (small)—NIOSH TC-84A-0013 | This N95 respirator failed the baseline fit test on 3 individuals. | 0 | N/A |
| Moldex N95 Respirator 1512 (medium)—NIOSH TC-84A-0013 | Baseline, cycles 1-3 | 3/2 | 6 J/cm2 |
| 3M N95 Respirator—9010 NIOSH TC-84A-4243 | This N95 respirator failed the baseline fit test on 2 individuals. | 0 | N/A |
| Cardinal Health USA N95A-S Respirator—NIOSH TC-84A-5463 | This N95 respirator failed the baseline fit test on 2 individuals. | 0 | N/A |
| GB2626-2206 KN95 Respirator—KN95-01-01 | This N95 respirator failed the baseline fit test on 2 individuals. | 0 | N/A |
FFR, Filtering facepiece respirator; N/A, not available; NIOSH, National Institute for Occupational Safety and Health; UVC, ultraviolet C.
∗
3M, St Paul, Minnesota; Cardinal Health, Dublin, Ohio; Moldex-Metric, Culver City, California.
†
Limited resources prevented testing of additional UVC cycles.