Table 2.
Performance characteristics of some commercially available nanofiber face masks
| Sl. no | Product name and country of origin | Particle filtration efficiency (%) | Bacterial filtration efficiency (%) | Viral filtration efficiency (%) | Material | Website |
|---|---|---|---|---|---|---|
| 1 | NASK nanofiber smart mask, Hong Kong, China | > 99% | ~ 99.9% Staphylococcus aureus | ~ 99% | http://nask.hk/ | |
| 2 | FNM RespiNano mask (FFP3, EN 149), Iran | > 99% | - | - | https://fnm.ir/Respiratory_Face_Mask | |
| 3 | Respilon 57 Antismog Scarf (R-Shield), Czech Republic | 99% diesel fumes | ~ 99.9% Staphylococcus aureus | ~ 99.9% | PVDF (~ 10 µm thick) | https://www.respilon.com/data/R-shield/files/RESPILON_Technical_Data_SheetR-shield_2019_4.pdf |
| 4 | Respilon® Filtration half mask (FFP2, EN 149:2009), Czech Republic | ≥ 98.78%, 0.26 µm NaCl particle | - | - | PA-6 | https://www.respilon.com/products/r-mask/data/home/files/RESPILON_Technical_Data_Sheet_RespiPro_Carbon_Filtration_Halfmask.pdf |
| 5 | RespiPro Carbon Half mask (FFP1, EN 149:2009), Czech Republic | ~ 98.39%, 0.26 µm NaCl particle | - | - | PA-6, Activated Carbon fiber (45 g/m2) | |
| 6 | BreaSafe (FFP3), EN 149:2001, Paradam nanotech, Czech Republic | ~ 99.8% of 0.3 µm particulates | - | - | https://www.nano4fibers.com/respirator-breasafe-anti-covidffp2 | |
| 7 | FilterLayr by NANOLAYR, NZ | > 95% of 0.3 particulate | ~ 98.75% | ~ 0.5 g/m2 | https://www.nanolayr.com/wp-content/uploads/2021/03/FilterLayr-Product-Sheet.pdf | |
| 8 | Inofilter® fabric by Inovenso, Turkey/USA | > 99% of NaCl particles of 0.26 µm (mass median diameter) | > 99.8% | > 99.8% of bacteriophage Phi X 174 (3 µm) | PVDF, TPU ~ 0.4 to 0.8 g/m2 | https://www.inovenso.com/inovenso-inofilter-95-99-3/ |
| 9 | Ahmedabad Textile Industry’s Research Association, India EN 143 | > 99%, 0.33 µm DOP | - | - | PA-6 | https://atira.in/nano-textiles/ |