The Viqua 602856 UltraViolet Lamp is a replacement bulb for the Viqua K, K+, PRO30, PRO50 systems, discontinued Trojan J, J+ systems, and discontinued Sterilight S80, SM80, SV50 systems. This bulb provides protection from occasional intrusion by microbial contaminants, eliminating up to 99% of bacteria, Cryptosporidium, E. Coli, Salmonella, and viruses. During ultraviolet sterilization, water is exposed at a controlled rate to UV light waves, which deactivate the DNA of microorganisms and prevent them from reproducing. Easy to install and maintain with replacement needed every 24 months. Order the 602856 Viqua Water Disinfection System UV Lamp today!