The Viqua 602806 UltraViolet Lamp is a replacement bulb for the Viqua E4, E4+, E4-V, E4-V+, E4-50+, IHS22-E4 systems and the discontinued Trojan PRO7 system. This bulb provides protection from occasional intrusion by microbial contaminants, eliminating up to 99% of protozoan cysts, bacteria, 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 12 months. Order the 602806 Viqua Water Disinfection System UV Lamp today!