This lamp uses UV rays to inactivate and to kill bacteria, virus, protozoa and yeast present in water. The UVC system emits a wavelength of 253.7nm that deactivates the genetic makeup of the microorganisms and makes them incapable to reproduce. The UVC wavelength of 254nm does not produce ozone. The UV light bulb works well for the following common applications: Well water Surface water Municipal water Food service/processing HVAC and Air Conditioning units Air purifier/treatment systems Hospitals Aquaculture Electronics Pharmaceuticals Hotels Water bottlers Laboratories Surface disinfection Marine and more Technical Specifications: Wattage: 30 Watts Wavelength range: 254NM Length: 35.22 inches (894.6mm) Base: G13 Medium bi-pin (2 pin), both ends Shape: T8 Base Material: Metal Average Lifespan: Up to 10,000 hours