| 1 |
SonoFace
230,231
|
Sonovia (Israel) |
Nano metal-oxide such as ZnO and CuO |
• 1 log10 reduction of SARS-CoV-2 |
• >98% particle filtration (5 μm) |
| • 6 log10 reduction of viruses similar to SARS-CoV-2 |
• Reusable and potent up to 100 wash cycles at 70 °C |
| • Less toxic to human and the environment |
| • Pack of three costs 159 USD |
| 2 |
MedCu's CuO face mask230
|
MedCu Technologies (Israel) |
CuO |
4 log10 reduction of viruses within 30 min |
• Pose no hazard upon disposal |
| • Conformitè Europëenne (CE) and FDA certified |
| • Costs less than a conventional N95 face mask |
| 3 |
Maya sticker
230
|
National Emergency Team of Israel and Israel Institute of Technology |
Nanofibres coated with antiseptics |
Blocks and neutralise viral particles |
• This sticker can be attached to regular surgical face masks for the usage |
| 4 |
ViriFace
230
|
Israel |
Data not available |
Viruses including SARS-CoV-2 |
• Filters must be replaced every 12 h |
| • Wearable part can be washed and reused |
| • Two filters and disposable envelopes cost 69 USD |
| 5 |
GS-3D N95 (ref. 232) |
Gold Shield (China) |
Organosilane based antimicrobial compound |
3 log10 reduction against bacteria and viruses like H1N1, methicillin-resistant S. aureus (MRSA), and SARS-CoV |
• Five-ply 3D N95 face mask |
| • Effective against particulates, pollutants, and pollens |
| • US FDA approved |
| • Reusable up to 14 days |
| 7 |
Silver Shield Ag+™ (ref. 233) |
Good Research Solutions LLC (US) |
Silver ions |
2 log10 reduction against pathogens |
• Reusable cotton face mask |
| • 5-Layer activated carbon filter present |
| • Potent up to 50 wash cycles |
| 8 |
SpectraShield 9500 (ref. 234) |
Nexera medical Inc. (Canada) |
Sciessent's Ag–Cu based technology |
• 4 log10 reduction of bacteria in 1 h |
• Ag–Cu impounded to polyester fibres |
| • 5 log10 reduction of influenza viruses in 5 min |
• Used up to 8 h continuously |
| • NIOSH approved |
| 9 |
NanoHack
235
|
Copper Company (Chile) |
Nano Cu |
Antiviral activity against influenza viruses |
• Three-layer nonwoven PP filter to embed nano-Cu |
| • Recyclable face mask made up of biocompatible polymer |
| • Blocks 96.4% (1 μm) and 89.5% (0.02 μm) microorganisms |
| 10 |
Copper KN99 (ref. 236) |
Copper Compression (US) |
Cu |
Filters 99% of airborne particles equivalent to KN99 |
• Four-layer washable and reusable face mask made up of cotton fabrics |
| • Durable up to 50 wash cycles |
| • Costs 29.56 USD per piece |
| 11 |
Noveko™ RD2 respirator237
|
Noveko International Inc (Canada) |
Data not available |
H1N1, H5N1, S. aureus, K. pneumonia, MRSA, and endospores of Bacillus, Enterococcus, Acinetobacter
|
• Complies with EN149:2001+A1:2009 standard |
| • BFE 99.8% |
| • VFE 99.7% |
| 12 |
Safe Life™ (ref. 238) |
Fisher scientific (US) |
Triosyn iodine-polymeric resin compound |
99.99% effective against airborne and droplet borne viruses |
• Fluid resistance provides protection from blood, liquid splashes, and wet environmental contaminants |
| • Activated carbon layer combats organic vapours and odours |
| 13 |
A400 series N95 (ref. 239) |
Safe Life Corp (US) |
Iodine |
Data not available |
• Compact, flat-fold design |
| • Was widely distributed by healthcare during Swine flu-2009 |
| 14 |
Nsafe+
240
|
Nanosafe solutions and Indian Institute of Technology Delhi (India) |
Data not available |
Data not available |
• Triple-layer filtration technology with antimicrobial layer |
| • BFE 99.2% |
| • Complies with ASTM standard |
| • Reuse potential up to 50 times |
| 15 |
MyClyns® (ref. 241) |
ViralClyns (US) |
Data not available |
95% effective against bacteria, viruses, spores, and protozoa |
• Patented and EPA authorised antimicrobial agent |
| 16 |
Guardian G-Volt
77
|
LIGC Applications (US) |
Graphene and electrical charge |
Data not available |
• Electric charge repels particles deposited |
| • 99% effective against 0.3 μm particles |
| 17 |
Graphene-enhanced face mask242
|
PlanarTECH & IDEATI's 2AM (UK) and Thailand |
Graphene and other carbon nanomaterials |
99.95% effective against S. aureus within 24 h |
• Reusable cotton face mask potent up to 10 cycles |
| • Repels the PM 2.5 dust |
| • Costs 24.95 USD for a pack of three |
| 18 |
Leaf
243,244
|
Redcliffe medical Devices Inc. (US) |
Ultraviolet C (UVC) |
99.99% reduction of influenza A virus |
• FDA cleared UVC N99 face mask |
| • HEPA and active carbon filters |
| • 99.9997% filtration of 0.3 μm size |
