The OSRAM germicidal linear lamps consists of a tubular glass envelope and emits more than 85% of energy in the UV-C ultra violet radiation. Its sharp, electrical characteristics and lighting circuits are similar to general fluorescent lamps. All lamps are Ozone free and a protective coating on the inside of the lamp limits the depreciation of the UV-C output. This lamp is perfect for residential drinking water units, stand alone air purifiers, wall mounted air purification units and ponds & aquaria. The products have an average lifetime of 8000 hours.