Expert opinion C6Power protective mask
Summary:
The Fraunhofer report (PDF) shown above investigates the antimicrobial effect of an oral-nasal protective mask (MNS) from C6Power against a surrogate for für SARS-CoV-2, dthe bovine coronavirus (bCoV).
Material and methods:
- The experiments were conducted with the bovine coronavirus (bCoV) in the BSL-2 laboratory of the Fraunhofer IZI.
- The test material used was a variant 2 mouth-nose protection mask (MNS) from C6Power, whose filter materials were analysed for their ability to detect electrostatic voltage.
- The MNS was sterilised in a safety cabinet and the surfaces of the plastic materials were sterilised with 70% ethanol.
- PT cells (ovine epithelial kidney cells) were used as the cell culture.
- The cell culture supernatant containing bCoV was placed on the filter material and the virus-containing suspension was removed from the filter paper for further testing.
- The bCoV virus concentration in the recovered samples was determined by titration on PT cells in three independent experiments.
- The results were calculated using the Reed & Muench method.
- Table 1 shows the bCoV titres after recovery from the filter material for variant 2 of the MNS.
- Figure 2 shows the summary of the mean values of three independent experiments for MNS variant 2. It is shown that the viral load is significantly reduced after filtering through the mask.
- Table 2 shows the results of a further experiment with the measuring points of the previous measurement.
- Tables 3 and 4 show the percentage reduction in the log levels of the measured virus titres for MNS variant 2.
- An individual experiment resulted in a reduction in the virus titre of 0.33 log levels, which corresponds approximately to a reduction of 52.84 %.
- Including the previous measurements resulted in a reduction of 0.44 log levels, which corresponds to a reduction of 63.30 %.
- There was a slight difference between the virus titres of the respective reference and the MNS variant.
- The mask shows a reduction in viral load, and this is statistically significant.
- The bacterial filter performance was expressed in the aerosol properties that penetrate the material of the medical mask. A filter performance of 95% generally indicates that only 5% of the aerosol units penetrate the protective mask.
- The MNS variant presented here is not applicable as it is not a medical MNS and also has potential antiviral activity.
- An additional test with ISO 18184 for testing the antiviral effect of textile products cannot be used here.
- A reduction of at least 2 log levels (-2, corresponds to 99%) or 3 log levels (-3, corresponds to 99.9%) is defined as the benchmark for an antiviral effect of the masks tested.
- The reduction in virus titre for MNS variant 2 is significantly lower at 52.84% or 63.3%.
- The mask needs a few seconds to achieve the desired effect.
To summarise, the Fraunhofer report examines the effectiveness of the C6Power mouth-nose protection mask (variant 2) in reducing the viral load of bovine coronavirus. The mask shows a significant reduction in viral load, but does not achieve the reduction of at least 2 log levels required for an antiviral effect. However, the mask only needed a few seconds to develop the observed effect. For procedural reasons, the C6Power mouth-nose protection mask test specimens could only be tested for a few seconds at a time. In these few seconds, however, the mask was able to inactivate more than half of the coronaviruses on average.
Remark:
It can be assumed that a face mask is worn for longer than ‘just a few seconds’. Note C6Power: An even higher effectiveness of the C6Power protective mask can therefore be hoped for. In order to be able to provide conclusive proof of this, the very cost-intensive establishment of a test specifically suitable for this new type of mask is still necessary.
Certificate - Anti Theft Bag For Keyless go
Certificate - Shielding Case For Phones And More
What does 'dB' (decibel) actually mean in this context ...
... and in simple terms:
For comparison, we measured the shielding performance of tin cans and aluminium foil and obtained a maximum shielding of 48 dB. We consider this type of shielding to be only 'conditionally safe' and uncomfortable and have therefore developed a better solution.
The above-mentioned measurement result only served us as a guide, since the maximum shielding to be achieved depends on many factors. For example, how many layers of aluminium foil are used (are 20 layers still practicable?) and whether it tears during wrapping or leaves open channels behind. The measurement of tin cans of different materials also showed a strong dependence on how tightly the lid seals the can. Air- and watertight is not the same as radiation-tight!
Many customers believe that they can test the safety and function themselves (without uni-equipment) by simply testing whether their car can still be opened or started. Unfortunately, this simple test is not meaningful because a weakened signal may not be sufficient to open the car, but it can still be strong enough to be amplified and thus extended. True safety here only results from a shielding with very high dB values, which is actually achieved at the keyless go frequency. The closer you let the range extender get to you, the higher the dB value has to be to be safe. If a poor range extender is many meters away from your key, 50 dB can provide sufficient protection. However, if you expect comfortable and truly secure protection, C6Power protective bags are the answer to this threat. They offer maximum security and comfort, even when the strongest receivers are in close proximity!
The above-mentioned applies in principle to any type of shielding, including smartphones, debit cards, etc.
Pictures say more than a thousand words
Fifa and Uefa have set the pitch size for international football matches at 105 metres x 68 metres, meeting the DFB's requirements of 90 and 120 metres in length and 45 to 90 metres in width.
Size of playing field 105 meters x 68 meters width = playing surface 7140 m²
Would the entire playing field area of 7140 square feet be the strength of the radiation of their Keyless Go key,
would be 0.000000714m², i.e. less than a thumbprint (1x1 cm),
what's left of the radiation when you use our bags to protect your car from theft!
For those who want to know it exactly, it is even only a small section of this fingerprint,
because it's not even 1 square millimeter:
The residual radiation by C6Power products is so little that it can't be amplified and extended to steal your car or data!
Not even if thieves use the most modern receivers at closest range!
| shielding in dB |
= | emission in watt |
emission in % |
reduction in % |
| 10 | = | 0,1 | 10 | 90 |
| 20 | = | 0,01 | 1 | 99 |
| 30 | = | 0,001 | 0,1 | 99,9 |
| 40 | = | 0,000 1 | 0,01 | 99,99 |
| 50 | = | 0,000 01 | 0,001 | 99,999 |
| 60 | = | 0,000 001 | 0,000 1 | 99,999 9 |
| 70 | = | 0,000 000 1 | 0,000 01 | 99,999 99 |
| 80 | = | 0,000 000 01 | 0,000 001 | 99,999 999 |
| 90 | = | 0,000 000 001 | 0,000 000 1 | 99,999 999 9 |
| 100 | = | 0,000 000 000 1 | 0,000 000 01 | 99,999 999 99 |
In general, the higher the confirmed shielding power in dB, the harder it is for resourceful criminals to get into your property.
Annotation:
Mobile phones transmit with up to 1 W in the 1800 and 2100 MHz network and up to 2 W on the 900 MHz network. Depending on the device, modern smartphones already start with less transmission power.
Electromagnetic waves spread out spherically, therefore the transmission intensity is reduced quadratically with the distance to the origin. To make it easier to imagine, just imagine a splash of color on a balloon that you inflate. The larger the balloon, the weaker the color intensity, or analogously the transmission intensity. The other way around, of course is also possible.If a resourceful criminal halves his distance to you, he quadruples (as it does quadratic) the transmit power available to him to use to access your data.