Spectra UV Lamp at Zubaidas Officialâ„¢UV Lamp to be used with Spectra UV Sterilizer. These UV Lamps must be replaced periodically. Replacement timing may vary depending on the usage and environment. When you notice that both ends of the lamp turned dark, this is an indication that the lamp should be replaced with a new one. For optimal sterilization, it is recommended that the lamps are replaced every 6 months. You require 2 pieces for Spectra UV Sterilizer. What? s in the box? 1 x UV Lamp