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Filtering efficiency of N95 FFRs against PM10.
| S. N. | N95 FFRs | Without filtration (μg/m3) | With filtration (μg/m3) | TIL (%) | Efficiency (%) |
|---|---|---|---|---|---|
| 1. | N95 (i) | 60.32 ± 4.46 | 17.97 ± 3.27 | 30 | 70 |
| 2. | N95 (ii) | 5.34 ± 1.67 | 1.61 ± 1.81 | 30 | 70 |
| 3. | N95 (iii) | 131.7 ± 24.12 | 33.31 ± 26.74 | 25 | 75 |
| 4. | NIOSH respirator | 115.8 ± 19.43 | 34.63 ± 16.59 | 30 | 70 |
