Ultraviolet disinfectant products

Adjective: ultraviolet (UV) - having or employing wavelengths shorter than light but longer than X-rays; lying outside the visible spectrum at its violet end; "ultraviolet radiation"; "an ultraviolet lamp"

Ultraviolet germicidal irradiation (UVGI) is a disinfection method that uses short wavelength ultraviolet (UV) light to destroy bacteria.   It is used in a variety of applications, such as food, air and water purification. UV has been a known mutagen* at the cellular level for more than a hundred years. The 1903 Nobel Prize for Medicine was awarded to Niels Finsen for his use of UV against tuberculosis.  Application of UV irradiation to purify water was a technique invented by Ashok Gadgil.

UVGI utilises short-wavelength ultraviolet radiation (UV-C) that is harmful to microorganisms. It is effective in destroying the nucleic acids in these organisms so that their DNA is disrupted by the UV radiation. This removes their reproductive capabilities and kills them.

The wavelength of UV that causes this effect is rare on Earth as the atmosphere blocks it. Using a UVGI device in certain environments has a destructive effect on micro-organisms such as pathogens, viruses and mould that exist in these environments. Sometimes coupled with a filtration system, UVGI can remove harmful micro-organisms from those environments.

The application of UVGI in disinfection has been an accepted practice since the mid-20th century. It has been used primarily in medical sanitation and sterile work facilities. Increasingly it was employed to sterilize drinking and wastewater, as the holding facilities were enclosed and could be circulated to ensure a higher exposure to the UV. In recent years UVGI has found renewed application in air sanitization.   The most recently available hand held products are proven to kill most germs found on kitchen work surfaces.   It’s interesting to note that kitchen work surfaces are often have more bacteria than lavatory seats!

 

* A mutagen (Latin, literally origin of change) is a physical or chemical agent that changes the genetic material, usually DNA, of an organism and thus increases the frequency of mutations above the natural background level.

Above::Verilux cleanwave UV-C sanitising wand