FAQ

UVC is a wavelength of light that doesn’t exist naturally in the earth’s atmosphere. Because UVC can’t be “found on earth,” common pathogens that prove dangerous or deadly to humans have no natural immunity to it. UVC disrupts the DNA and RNA strands of contagions, making them unable to replicate. Since UVC can be artificially created in a bulb—and more recently in an LED substrate—UVC has been used as a very effective disinfectant against viruses, bacteria and fungi for decades.

To learn about the details of the UVC decontamination process, you can download our whitepaper.

Our designs include RBG lights and open panels or screens so that you can “watch” the cleaning process, even though both germs and UVC light are invisible to the naked eye.

Because of the combination of features that our products utilize, the signs of decontamination are almost all negative proofs. To tell if the Cleanbox product is working, you should pay attention to what is not happening:

a) You won’t see changes in the color of fabric or other materials,

b) You won’t smell anything because bacteria are being destroyed and don’t cause cultures that create odors;

c) You won’t see the pathogens being destroyed because they are micro-organisms. You’d need a microscope to observe the effects. (However, we do have the microbe lab reports to prove that the process is eradicating bacteria, viruses and fungi.) We do have the microbe lab reports … Please contact us if you would like to review them.

d) You will not see any shadows on the item being disinfected, because UVC light will be reaching every nook and cranny, eliminating contagions. 

You will not need to use any kind of wipe to rid a headset of contagions. You can use antiseptic or alcohol wipes on the plastic outside of an HMD, or to remove sticky materials, food or makeup. If you see something sticking to the surface of an object, a dry microfiber cloth is a better choice.

Because UVC is a shorter wavelength and has a much different impact than UVA or UVB, it does not cause any damage to the items being decontaminated. The impact of UVC on plastics, lenses, or the other materials is negligible. You will see no difference over the lifetime of electronics and other things you are disinfecting with a Cleanbox product.

No, UVC does not affect screen display quality.

We know that the sun damages electronics and plastics with UVA and UVB wavelengths, so it’s easy to think that UVC light might do the same. However, UVC is a different wavelength and does not have the same impact on materials. We have conducted multiple tests simulating years of exposure to Cleanbox UVC engineering and have validated no visible or functionary impact at all to plastics, glasses, or electronics.

Running a face mask through a Cleanbox product will not produce the ‘sun bleaching’ effect found on textiles of fabrics left outside for months or years in the sun (UVA and UVB light), and will not alter the efficacy of a face mask. In a study conducted for us by Dr. Steven Bradfute of the University of New Mexico, N-95 masks were exposed to Cleanbox UVC light continuously for seven days, which is roughly equivalent to 10,000 CleanDefense decontamination cycles, with no degradation in quality observed.

Remember that UVC light is a very short wavelength of light that disperses exponentially the further it is from a surface. UVC light is also stopped by almost any material—including the outside layer of your skin (so it will never “get in you”), and of course is also stopped by the acrylic on the outside of your Cleanbox. So you can watch your Cleanbox run for hours but never be exposed to UVC light. If you intentionally exposure your eyes or skin to extremely prolonged exposure (hours) at a very close range (within 50 mm) and continuous contact with UVC light, you will experience irritation. As a safety measure, all Cleanbox products will stop their cycle if the door to any of our units is opened.

UVC light does bounce around, but the highest effectiveness is where the lights shine directly. Because light obeys the inverse-square law of physics, the further it travels, the weaker the exposure. Cleanbox products are designed to shine light where it is needed most, at the distance that creates the maximum effectiveness on the touch points of your device.

Because UVC wavelengths are short and efficacy is based on intensity, distance from surface and time, it’s important to have consistent exposure of the contagions to the UVC light. Hand-held UVC devices will be subject to a range of results because it’s not easy (or natural) to hold a wand across the entirety of a surface consistently for the time needed.

Simply put, Log Kill–also known as Log Reduction–is a common logarithm metric describing how well a process of decontamination eliminates a contaminant. It is determined by measuring the relative number of living microbes eliminated when the decontamination process is complete. The higher the Log Reduction, the more thorough the decontamination. By eliminating 99.999% of living microbes, Cleanbox products achieve a Log Kill of 5.
The table below shows the level of contaminant reduction in each level of Log Reduction.
Log Reduction Reduction Factor Percent Reduced
1 10 90%
2 100 99%
3 1,000 99.9%
4 10,000 99.99%
5 (Cleanbox Products) 100,000 99.999%
We understand. The log kill rate is​ confusing…because there are two ways that “log kill” is used in the world.
Microbe Labs: What they do is they count how many bacteria they put into the sample. They put hundreds of thousands of bacteria, fungi or viruses into a single sample. Because those numbers are unwieldly to put on a form, they shorthand the numbers. For example, 1.42E+05 pathogens = 142,000 pathogens. The logarithm of 142,000 = Log 5.15. So, because it’s shorter and easier to type (especially when they get to very large numbers), they use the Log notation for pathogen count.
Let’s make up an example contagion testing. Say we start with 5.59 log of fungi and reduced it to 5.15 log after 120 seconds. Thus, we reduced the pathogen by Log 0.44 in total count (5.59 – 5.15 = 0.44). But if we want to calculate the percentage of kill, we take the bacterial burden of the treated sample (1.42E5 or 142,000) and divide it by the bacterial burden of the control (3.93E5 or 393,000) and subtract 1. That gives us the percentage reduction of 63.87%.
In another example of this kind of notation, let’s say we start with Log 4.3 count of pathogens in the sample, and we kill every last one of them (100% kill). This would still be notated as “Log 4.3 reduction” because there were only Log 4.3 of the pathogens to kill in the first place, but our “percent reduction vs control” would be 100%.
And then there’s everyone else: Log 1 = 99%, Log 2 = 99.9%, Log 3 = 99.99%, etc. This is acceptable nomenclature everywhere except​ in microbe lab reports.
We can convert “microbe lab” notation to the “everyone else” notation by simply paying attention only to the “percent reduction vs control” statistic and placing it in the scale above.
Clear as mud? We know, so feel free to send us an email with any questions.

Because UVC light falls off in intensity dramatically with distance, there are only two useful ways to use UVC light for surface decontamination: either by using very long cycle times (15 minutes+) so that materials further from the lights can accumulate a necessary dosage, or by positioning an array of lights around the materials to be disinfected, to allow an even distribution of light that requires a shorter cycle time (<2 minutes). UVC LEDs are smaller than UVC bulbs; generate less heat and use lower power; and can be positioned to create precise dosage of energy onto the materials being disinfected. Additionally, UVC LEDs do not contain mercury or emit ozone, eliminating those toxicity concerns. Just as importantly, UVC LEDs can have wide arcs of light (>90 degrees) which allows grids of LEDs to be created that have overlapping cones of effect, reducing the potential for shadowing caused by nooks or crevices in the materials being disinfected. Since UVC light efficacy is line-of-sight, this is a tremendous benefit over standard UV bulbs.

Lastly, UVC LEDs can be tuned to specific wavelengths, allowing treatment of pathogens at wavelengths other than the traditional mercury bulb wavelength of 254nM. Wavelengths between 260-280nM have been shown to be more effective at destroying a range of pathogens, so UVC LEDs, when used properly, have potential to provide more efficient and effective decontamination.

Although the cost of UVC LED grids is higher than that of traditional mercury bulb devices, and the designs are more complex, the positive benefits of UVC LEDs far outweigh those marginal drawbacks in any case where efficacy of the product is of primary concern.

Warranty

Yes. All Cleanbox products come with a 1-year warranty. If your Cleanbox product is defective in any way, please contact customer service.

While our warranty will not cover accidentally damaged equipment, our customer service team is happy to work with you to provide replacement components at a nominal cost.

Download Warranty