UV sterilizer light is an effective tool for eliminating microorganisms such as viruses, bacteria, mold and yeast in the air and impurities in water. You can use this UV light bulb for your aquarium, refrigerator, air purifier, micro-wave oven, etc. This UV lamp is perfect for places like hospital, office, school, swimming pool and more. Description: Great UV sterilizer lamp tubes generate 254nm UVC rays Used to kill bacteria and viruses in aquarium, kitchen, bathroom, restaurant, etc Quartz glass tubes, 2G11 base Overall Length: Approx. 8.5 inch Watts: 18W Power: 110V / 220V Note: This UV lamp must be used with an external ballast which is not provided here. Package Included: 1x UV Lamp Tube