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    Questions and Answers

    Questions and Answers on How UV-C light can change the world?

    ­Will UV-C prevent mold?­
    Ultraviolet light is very effective at killing mould. It can kill mould in air and on surfaces. It's effective at treating the mould you know about. It won't necessarily prevent the growth of mould, but can help treat the mould that has identified itself
    ­Why did not UVC get much attention during the Pandemic global lockdown, compared with other measures say hand sanitisers, vaccinations, isolation, masks, punative measures etc­
    So whilst other measures got more attention, the pandemic has notably helped accelerate the level of adoption and advances in UVC technology. UVC disinfection has now become one of the most prominent measures of the NHS's infection control mandate and has seen further inclusion in guidance from authorities such as HSE and CIBSE. All these other measures have been considered "standard practise" in controlling the spread of infections, whether they are not necessarily better or worse than doing so compared to UVC. Hopefully, it looks like by seeing the widespread benefits, impact and results of UVC disinfection, this now becomes more considered and used as "standard practise" in fighting the spread of infections.
    How do I ensure the quality of disinfection?­
    The best way is to consider as many environmental variables as possible and take these into consideration when building a UVC solution, as this will then be the optimal solution in the context of achieving the sterilisation objectives. Combined with obviously using recognised and laboratory approved equipment.
    In case of disinfecting the surfaces how can I make sure that surfaces are disinfected after UVC exposure
    Using contact plates, you check the presence before and after of microorganisms. We have testing equipment and protocols to measure the level of dosage if that is required to disinfect the different bacteria and viruses. To some extent though, you don't check the level of disinfection after using wipes or bleach, neither do you necessarily if you are using UVC disinfection equipment appropriately. If the solution has been designed accordingly, then disinfection should be working just fine.
    Are there any other UVC lamps now doesnt make ozone smell?­
    Yes, not all lamps produce Ozone. Ozone is formed at lower wavelengths than UVC disinfection at 185nm. At this wavelength, Philips TUV glass absorbs it, meaning the lamps do not produce ozone.
    Can you give 2 negative points of UVC?­

    1) UVC Exposure is dangerous, so there are numerous safety precautions in place which limit the usability of certain types of solutions.

    2) UVC only has a certain reach. With surface disinfection, it only works on surfaces that are in view, with the strength of disinfection reducing with distance.

    How are your clients reacting on the fact that UVC doesn't deliver a visible result? They see the cleaning lady whiping the table, but they don't see the working of the UV light.­
    It's an element of the UVC solution which requires a level of education. Pretty much all forms of disinfecting don't produce a visible result because the matter being sterilised is not visible. For instance, with wiping a table, you see physical particles (e.g, bits of food, dust) being cleaned, rather than microorganism disinfection. What people see is the process, rather than the results. There are elements of the "UVC disinfection process" which help give clues to the fact it is working such as operational lights and the smell of fresher air. Because you typically don't see any "action" involved with UVC disinfection, there is a trust required from the customer that the UVC disinfection is fit for purpose and working effectively, like there is a trust required when using all disinfection products. One of the reasons that best cements trust is using equipment from a globally recognised brand. At Signify our UVC  products have been tested in laboratory conditions and the fantastic results reported by third party organisations. This testing is expensive to do but shows our commitment to getting it right.
    Do you have the data from the Boston University testing? Can you post it or send it, please.­

    Yes of course, please find the following weblink which summarises the findings from Boston University's research -

    click here

    How do you pitch this against competing methods of ventilation such as HVAC & Air purification?
    Air cleaners require a lot more maintenance and work at a higher micron level, meaning they are not necessarily picking up all the viral matter in the air compared to UVC disinfection which has been proven to inactive all known microorganisms. HVAV is great for controlling air quality and room comfort, but doesn't provide an in-room protection against the threat of transmission of bacteria and viruses.
    Is UVC LED is already part of your solutions?
    As Dakro: "Yes, we offer some UVC LED solutions mainly for surface disinfection and we hope to bring in more solutions like this going forward"