
Replacement bulb works well and I have just ordered a second one as a spare. The product comes in a cardboard cylinder with a plastic stopper and no information, so I would recommend the following precautions. 1) wear surgical examination gloves when handling the lamp and clean it of styrofoam particles that may stick to the lamp and its pins (fingerprints significantly reduce lamp life) 2) disconnect the UV unit before installation Mains 3) Completely install lamp in housing, opaque plug-in block with free socket at top for lamp attachment). Then turn on the UV blocker. Never look into a light in space (it's a form of biocide, after all). Your retina will thank you. Edit: The first lamp I bought lasted 5 months. The glass at both ends of the bulb was scorched. The second set, the third ordered. If the situation persists, it may be worth finding an alternative.

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