Tungsram Germicidal UV Lamp uses a special glass that transmits ultra-violet light in a spectral band that can be effective for sterilization. A proven technology for the destruction of air-borne bacteria, viruses and mould spores. Improved system efficiency when installed in HV Air Conditioning (HVAC) units by reducing bacterial and mould growth. The UVC wavelength of 254 nm will inactivate bacteria, viruses, mould, and cysts by preventing DNA replication.