What is UVC?
The sun emits UVA, UVB, and UVC light rays. UVC or also known as, “germicidal UV” are short wave ultraviolet radiation that are used to destroy bacteria, viruses, mold, and other biological contaminants in the air, liquids, and surfaces. Since they are such a short wave length, they are blocked by the atmosphere. Germicidal UVC has a specific wavelength of 253.7 nanometers and is known to deactivate germs. UV-C is not a new technology and has been safely used for over 75 years.
How does it work?
- UV-C light at an optimal wavelength of 253.7 nanometer penetrates the cell wall of the micro-organism
- The high energy photons of the UV-C light are absorbed by the cell proteins and DNA/RNA
- DNA is chemically altered so organisms can no longer replicate
- Organisms are unable to metabolize and replicate, so cannot cause disease or spoilage
Light Reflectivity-Time efficacy
Each micro-organism has varying de-activation rate with respect to UVC light. One micro-organism may only take 4,000 nm/cm² of UVC light to disengage will others may take up to 46,000 nm/ cm². Given the varying rate time and reflectivity must work together and proper sensors must be present to calculate that reflectivity. The more powerful the UVC machines are, the shorter the time is takes to properly and effectively dose a room. Both shadowed areas and surfaces with a direct line of sight will be deactivated.