UVC purification has a long and honourable history in cleaning room air. Microorganisms such as bacteria, moulds, yeasts and protozoa can be destroyed or removed by physical, biological and chemical methods. UVC works using a photolytic effect whereby the radiation destroys or inactivates the micro-organism so that it can no longer multiply. For DNA it does this by causing adjacent thymine bases to form a chemical bond thus creating a dimmer and if sufficient of these are created, DNA cannot replicate. Some micro-organisms can repair themselves by absorbing UVA. In other cases UVC (and indeed UVA or UVB) can cause bond splitting in a molecule resulting in the creation of free radicals, which are often highly labile and which can react together to produce an inert end product.
How UVC disinfection works
UVC light emission
The UV light emitted by a source is expressed in watts (W) and the irradiation density is expressed in watts per square meter (W/m2). Germicidal action is maximised at 265 nm with reductions on either side. Bacteo Tower Lamp has emission at 254 nm where the action on DNA is 85% of the peak value and 80% on the IES curve. For wavelengths below 235 nm the germicidal action is not specified, but it is reasonable to assume that it follows the DNA absorption curve. Micro-organism's effective resistance to UV light varies considerably.
Contrary to most chemical disinfectants, UV rays have been well-recognized as an effective method for inactivating microorganisms, but their effectiveness for inactivating germs has been related to several parameters, such as the level of irradiation, the duration of irradiation (in general, the UV dose for a 99% viral reduction is two times higher than for a 90% viral reduction), and RH. At a high RH, a higher UV dose is required to inactivate viruses on contaminated surfaces.
Bacteo Tower Lamp is equipped with a powerful 95 watt UV-C Lamp which emits high dosage of UV-C light capable of destroying the most common viruses and pathogens. The operational time needed for an effective disinfection is based on the size of the room you wish to clean.Control switches have been designed to prevent guessing and ensure effective disinfection. Simply select the size of your room and Bacteo Tower Lamp will begin the disinfection process.
Does it eradicate the SARS-CoV-2 virus that causes Covid-19?
Over the years, UV light has been successfully used to destroy various SARS viruses. Until recently, there was no research on whether UVC light is capable of destroying SARS-CoV-2, a virus which causes COVID-19 disease. Today, scientific studies show that high doses of UV-C light destroys the harmful SARS-CoV-2 virus and prevent the spread of coronavirus.
The research concluded that "UV-C is a powerful tool that can be applied extensively in a wide range of public institutions including hospitals, nursing homes, workplaces, schools, airports and shopping centers to disinfect contaminated equipment and surfaces to prevent and reduce SARS-CoV-2 contact transmission."
Studies that prove UVC effectiveness against Coronavirus: