Table 1.
Filtering facepiece respirator features
| Parameters | 3M 1870 N95 FFR | 3M 8293 P100 FFR |
|---|---|---|
| Sizes available | Standard | Standard |
| Shape | Flat fold | Cup |
| Dimensions (cm) | 21.0 × 23.8 × 8.6 | 20.3 × 26.6 × 5.0 cm |
| Weight (gm) | 9.3 | 29.3 |
| Exhalation valve | No | Yes |
| Tethering devices | Two narrow, nonadjustable polyisoprene bands | Two adjustable, wide, braided polyester straps with multiple parallel polyisoprene bands |
| Layers | Three hydrophobic layers | Three hydrophobic layers |
| Other features | Pliable nose bar | Pliable nose bar, inner foam face seal |
| Static dead space volume (mL) | 325 | 240 |
| Filter resistance (mm H2O)∗ | 6.3 ± 0.5 | 17.4 ± 0.8 |
FFR, filtering facepiece respirator.
∗
Measured at 85 L/min of constant airflow.