Please note, the following testing has been made available so you can adjudicate for yourself the efficacy of the Copperline Mask. We are making no therapeutic claims.


Journal Article: Copper-impregnated three-layer mask efficiently inactivates SARS-CoV2

Report showing inactivation of Delta Variant even after 100 washes

Click below links for more information of the Copperline Mask

Assessment of COVID-19 Virus Virucidal Activity of Copper-Based 3D Textured Respiratory Face Mask

Nylon Copper Fibre Synthetic Process




Further Testing

The below summaries and actual results are all based on testing the Copperline Mask with the Anti-Dust HEPA filter attached (unless specified).

Note that the active copper is contained within the Copperline Mask as a knitted thread and NOT in the Anti-Dust HEPA filter. 

The Copper Mask contains 3 protective layers - when adding the Anti-Dust HEPA filter it adds another 3 - all up these are results with tests inclusive of layers.

The Copper Mask solely worn is effectively rated at KF80 - filteration 80% of ~0.3μm particles. Helpful against aerosol & droplet particle transmission in day to day settings, all day - everyday even without the Anti-Dust HEPA filter. The filtration has been tested according to European Standards - with Paraffin Oil, rather than US Standards (with salt) which simulate better liquid protection.

See the difference between KF94 and N95 here. (Credit & Source: Thomas Talhem, Smart Air)

According to Nelson Labs USA, the most relevant testing criteria for general use masks are:

  • Bacterial & Viral Filtration Efficiency (BFE/VFE)  
  • Particle Filtration Efficiency (PFE)  
  • Respirator Precertification Tests – NIOSH
  • Surgical Face Masks and General-Use Masks – ASTM F2100 & EN 14683

 (Source: Nelson Labs Website)


TEST 1: Bacteriological Amounts

Date: 22/05/2018

Method: AATCC 100-2012

Staph Aureus (ATCC 6538)
0 minutes: 72%
10min - 87.6%
60 min - >99%
24 h - >99%
E. coli (ATCC 8738)
0 minutes: 16.9%
10 mins: 51.2%
60min: 99.5%
24 h >99.9%





Date: 25/02/2020 

Method: ASTM F299-2003 (Flow Rate 28.1 L/min)

Filtration Efficacy of Mask at 0.1 ul PSL:
1. 99.54%
2. 99.69%
3. 99.45%
4. 99.72%
5. 99.60%
Mean: 99.6%
NB. 1mmH20=9.8pa


TEST 3: FILTRATION EFFICIENCY (Virological Challenge)

Date: 06/03/2020

Method: ASTM F2010-2019 Modified

Virus Filtration Efficiency >99% (Bacteriophase phiX174 - Test carried out 06 March 2020) Mean # of colonies in control group 255A 090 cfu.
Mean particle size 2.8um
Test surface: outside
Test area: 39.5cm
Sub-micron particulates filtration efficient at 0.1 micron > 99% - Particulate




 Date: 16/01/2020
Method: Particulate Penetration Efficiencies with Parrafin Oil - 16/01/2020
Standard: KF94 Result: 99% of 0.1μm 



Dust Weight Arrestance %  

STANDARD: (ANSI/ASHRAE Standard 5.21 [Superceded by ASHRAE Standard 52.2])

METHOD: Test air velocity @ 1.0m/s (196.85 fpm). Final resistance at 76mmAq
RESULT: 92.6%
EQUIVALENCES: MERV 8 to Australian Standard F5. (AS1324.1-2001 & AS4260-1997)