What is UVC light, and how does it kill microorganisms?
Ultraviolet (UV) light is a form of light invisible to the human eye that exists on the electromagnetic spectrum between X-rays and visible light. We are exposed to low levels of UV light from the sun’s rays every day, although much of the UV energy is absorbed by the ozone layer.
Why use UVC light to disinfect?
UVC wavelengths are between 200 and 300 nanometers, making them germicidal – meaning they are capable of inactivating microorganisms such as bacteria, viruses and protozoa. This quality makes UVC energy an effective way to prevent microorganisms from replicating in any environment.
Demonstrated Efficacy
The Tru-D iQ System has shown positive results when tested against microorganisms in direct line of sight and shadowed areas in independent lab testing.
| Microorganism | Log Reduction |
|---|---|
| C. difficile | 2.8 - 4.6 log10 |
| MRSA | 4 log10 |
| C. auris | 3.4->4.4 log10 |
| SARS-CoV-2 | 4.0 - >4.3 log10 |
| Influenza A (H1N1) | 4.2-5.2 log10 |
*Independent lab testing.
How does UVC destroy microorganisms?
The high energy from short wavelength UVC light is absorbed in the cell nucleus, damaging nucleic acids and preventing microorganisms from reproducing. This absorption of UVC energy forms new bonds between nucleotides, creating double bonds or “dimers.” Dimerization of molecules, particularly thymine, is the most common type of damage incurred by UVC light in microorganisms. The formation of thymine dimers in bacteria and viruses prevents replication.
What type of UV light is germicidal?
There are three UV wavelength categories: UVA, UVB and UVC. The Tru-D device produces UVC, the only wavelength known to be germicidal. UVC utilizes short-wavelength ultraviolet radiation (shorter than UVB and UVA which are NOT germicidal) that is harmful to microorganisms.
Tru-D devices ensure thorough room disinfection
Through its measured UVC-dosing capabilities, the Tru-D device is able to inactivate microorganisms including C. diff, VRE, MSSA, SARS-CoV-2 and others. Using proprietary Sensor360 technology, the Tru-D device compensates for room variables, ensuring every hard, nonporous surface in the room is thoroughly disinfected, inactivating unwanted microorganisms in the space. Third-party research has validated the Tru-D device’s ability to destroy microorganisms that can pervade the environment.
Discover the Tru-Difference
Dedicated to results and backed by science, Tru-D devices stand apart