The Sterilight S37RL-AM (Amalgam) Lamp is the original replacement UV bulb for the Sterilight S80, SM80 SV50 light commercial water disinfection systems. When you buy a Genuine Sterilight S37RL-AM UV lamp you can be assured of the performance, safety, and warranty of your system. Sterilume-AM germicidal UV lamp replacement for Sterilight S80, SM80 SV50 UV water disinfection systems Sterilight S37RL-AM UV lamps have a full one-year warranty and have been tested in order to deliver a specific UV intensity in each system that is offered This genuine S37RL-AM Sterilight UV lamp can easily be identified by the white bulb base NEW Environmentally Friendly lamps with low mercury(Hg) technology provides lamps with less than 10 mg of mercury All Sterilume lamps are TCLP compliant and meet current US state requirements regarding the "Mercury Phase-out" program Proprietary LongLife+ coating eliminates accelerated depreciation associated with higher intensity lamps, provides stability, longer life and increased efficency