Tests
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 6 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 |
Results
|
| Staph Aureus (ATCC 6538) |
Reduction
0 minutes: 72%
10min - 87.6%
60 min - >99%
24 h - >99%
|
| E. coli (ATCC 8738) |
Reduction
0 minutes: 16.9%
10 mins: 51.2%
60min: 99.5%
24 h >99.9%
|
TEST 2: FILTRATION EFFICIENCY
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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 |
TEST 4: PENETRATION EFFICIENCY (Incl HEPA)
| Date: 16/01/2020 |
|
Method: Particulate Penetration Efficiencies with Parrafin Oil - 16/01/2020
Standard: KF94 Result: 99% of 0.1μm
|
TEST 5: DUST WEIGHT ARRESTANCE TEST (UPDATED 07 APRIL 2020)
| 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) |
