UV SANITATION FAQs

UV Light FAQs

  • What is UV Light?

    Ultraviolet (UV) is a form of electromagnetic radiation with wavelength from 10 nm (with a corresponding frequency of approximately 30 PHz) to 400 nm (750 THz), shorter than that of visible light but longer than X-rays. UV radiation is present in sunlight, and constitutes about 10% of the total electromagnetic radiation output from the Sun. It is also produced by electric arcs and specialized lights, such as mercury-vapor lamps, tanning lamps, and black lights.

    Within the range of UV wavelengths, UV-C is the range from 100 to 280 nanometers. These waves are categorized as short wave germicidal, giving them the ability to inactivate or kill bacteria, viruses, fungi, and protozoa. Additionally, this technology is commonly used in water sterilization, medical facilities, and HVAC systems.

    Research has show UV-C light to be effective at inactivating a range of viruses including the COVID-19 Coronavirus.

  • UV-C LED Disinfection

    High Power UV-C LED Disinfection is an effective method to easily inactivate all microorganisms. These systems are highly effective against a wide range of viruses, bacteria, molds and yeasts, including dangerous viruses such as SARS-CoV-2, Salmonella, E-Coli, Strep, and many others. This process is 100% chemical-free leaving behind no by-products making it a great solution for disinfecting large commercial spaces.

  • Can U-VC inactivate COVID-19?
    • COVID-19 is the respiratory disease caused by the SARS-CoV-2 virus that has caused outbreaks worldwide. The SARS-CoV-2 is a new variant in the coronavirus family (Fisher 2020).
    • COVID-19 is a small, single-stranded RNA virus that makes it much easier to inactivate in comparison to mold or any sporadical pathogen.
    • “The inactivation rates of the small RNA viruses, poliovirus 1, and coxsackievirus B4, by low pressure UV were very rapid and reached approximately 4 log and greater than 5 log, respectively, within a UV dose of 30 mJ/cm2.” – Environmental Protection Agency
    • https://cfpub.epa.gov/ncer_abstracts/index.cfm/fuseaction/display.abstractDetail/abstract/1128/report/F
    • UV-C  has been found to destroy viruses and other microbes on surfaces.
    • The U.S. government and the UV technology industry are working to define standards for UV disinfection technologies in healthcare settings.
    • Most UV sanitizers have not been tested against the novel coronavirus, SARS-CoV-2, but UV-C  has been shown to destroy related coronaviruses, including the one that causes the disease MERS.
  • How Does UV-C Work?

    When UV-C wavelengths enter a cell, it disables the cell by damaging critical nucleic acids and proteins by forming duplicate bonds called dimers rendering the organism inactive or unable to reproduceThe germicidal effects of UV-C wavelengths neutralize a wide variety of pathogens. UV-C light enters the cell’s nucleus, causing irreversible damage to RNA (Viruses) and DNA (Bacteria). 

    This UVC disinfection system is effective with proper dosages on bacteria, viruses, fungi, and protozoa on a variety of surfaces, materials, and objects.  

    UV light between 200-280 nm inactivates at least 2 other coronaviruses that are near relative of COVID-19 (SARS-COV-1 and MERS-COV)

  • Applications of UV Light Spectrums

    UV-C: Eliminates Mold, viruses, and bacteria in the air & surfaces, disinfects drinking water & treatment of sewage.

    UV-B: Phototherapy, skin treatment, Vitamin D production, and cannabis THC potency.

    UV-A: Tanning, treatment of skin diseases, indoor gardening, eradicating bugs, improving air quality, and object identification.

  • UV-C Disinfection

    UV-C disinfection can be calculated using UV dosage standards for a wide variety of bacteria and viruses. Systems can be tailored to meet desired Log reduction depending on the application. All of our calculations are provided with 99% and better reduction timelines. 

    https://iuvanews.com/stories/pdf/archives/080104Cairns_Article_2006.pdf

  • UV-C Disinfection Dosages

    Surface purification timelines can be calculated based on distance and surface area being covered. We have several baseline time tables for single unit or distributed units. By centering cleaning heads over the most critical surfaces, the peak dosages will be targeted to these areas. The timelines provided are based on the average dose over the desired area, not the peak. 

    Dosimeter cards can be used to confirm installations perform as desired. 

    Surface purification is a factor of time, distance, line of sight and which pathogen is being targeted.

  • How to Determine UV Exposure Time

    We are able to provide studies based on actual testing data for our LED system to calculate time tables. 

    Special IES files are available to calculate dosage within calculation programs such as AGI-32.

    Product running time can be determined based on the desired Log reduction for the client. Generally we provide 99% reduction (2 Log) as a standard timeline, while some clients may prefer 90% or 99.9%. The longer the product runs, the higher the dose.


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