When bacteria or viruses are exposed to UVC light, UVC photons destroy the hydrogen bonds in the DNA or RNA. This prevents the cell from being able to reproduce, and it will be inactivated and then die.
UVC technology has been documented for more than 100 years, and therefore, there is a large amount of scientific material that can be used for dose calculations. It is also known that the optimum wavelength for disinfection is 264nm, which is why the aim is for a lamp peak that is as close to the wavelength as possible.
UVC light does not care about temperature and pH
UVC light is powerful because it works in both cold and warm environments, whether the bacteria are in solid, liquid or airborne form. Therefore it is a really good match for many disinfection needs, where we like to avoid contact, chemicals and waiting time.
In fact, you cannot over-treat with UVC light, and should there be particles that hide bacteria from the light, a low-grade treatment cannot cause a risk for mutation or resistance.
However, it is important to choose the correct type of UVC light for the task, as our product palette contains systems that perform optimally in the different environments, such as cold, warm, humid or dry. For specific solutions, you can explore our UVC tunnels for automated surface treatment or our versatile systems for comprehensive disinfection.
Custom UVC solutions: Standalone or combined systems
The UVC light can easily solve a large number of disinfection tasks alone – however, it is light, so particles, dirt and dust must be removed or treated. We make systems with air showering, where surfaces on items are “flushed” with air, which is filtered and recycled in closed systems.
We also offer combination solutions, where UVC lamps are the last part of a washing and cleaning process. This ensures an end product with a high hygiene standard and reduces the risk of unfortunate growths, with the option to minimise the use of traditional cleaning chemicals.
Find our solutions in all industries, from biosecurity solutions in agriculture to pharmaceutical production and food production in all categories.
How Natdis can help you with a sustainable UVC solution
Calculating the correct UVC dose for disinfection
When it comes to disinfection, there’s a big difference in how large a UVC dose is needed to neutralize different microorganisms. So, if you need disinfection, we identify which bacteria, virus, or fungi we should treat. This is something we typically know, but if we find ourselves in unfamiliar territory, a test setup can almost always identify the required dose.
Once we know the target, it’s a question of what log value is desired – translated into ordinary language, log-1 is a 90% reduction of a given amount of organisms and log-4 is 99.99% reduction. In some environments log-1 is the right solution, and in others, you may want 99.999%. You decide, but this is obviously an important decision, as for every log reduction, the energy requirement is doubled.
The UVC power itself is expressed in watts (W), and often as watt per square meter (W/m²). When we talk about the UVC dose, time must be included. We multiply the power (W) by the time (t) in seconds to get the final dose in joules per square meter (J/m²).
The mathematical formula used for calculating UVC dose:
Dose (J/m²)=Intensity (W/m²)×Time (s)
Can we help?
If you require disinfection but have not seen the solution yet, call 70 44 41 93 or write to us.
We are always ready to offer a NATDIS solution using UVC light, tailored to your specific needs and wishes.
Effective disinfection with light – an alternative to chemical processes
Effective disinfection with light – an alternative to chemical processes
When UVC is used correctly, it provides highly effective disinfection of liquids, air, and surfaces – without the use of traditional chemical cleaning agents.
The systems are designed to operate without direct contact and without the need for post-treatment, as the lamps are ozone-free. In addition, the solutions can be automated with advanced monitoring and logging features.
Consistent and controlled post-treatment – designed for high operational reliability.
