Time to replace the UV bulb in your water purifier? This LSE Lighting bulb is a direct, high-performance equivalent for systems using the LC210 bulb type. It's a 14-watt, 12-inch long ultraviolet germicidal lamp that emits light at 254 nanometers (the UVC wavelength that zaps bacteria and viruses). Importantly, it's the \L\ type, which means it's ozone-free and safe for indoor water treatment use. It has a 4-pin single-ended base (B16) and operates on a preheat circuit. With a rated life of 10,000 hours, it's a long-lasting and reliable replacement. LSE Lighting is a professional UV brand with EPA establishment number 96823-PA-1, so you know it's legit. Please note: This is an LSE brand bulb sold as a compatible replacement; we don't sell the original ELGA LabWater brand. A crucial warning – UVC light is harmful to eyes and skin. Always turn off and unplug the unit, wear safety glasses and gloves if possible, and avoid looking directly at the bulb during installation. Keep your water clean and safe with a fresh UV bulb!