The good thing about this light is that it's a true 365 LED in a traditional incandescent form factor, and it is practical, the only product is it nice. The bad thing is that it's a dim light. I'm familiar with 365nm UV lamps, so I know this lamp would never illuminate a non-fluorescent object, no matter how bright it might be. The problem is that even luminous objects are poorly illuminated. I have two flashlights at 365nm that absolutely wipe the floor with this bulb. If I had to guess, I would say (scientifically) that this bulb is about 20% brighter than one of those flashlights. Ultimately, this bulb was too weak for my application, so I sent it back.
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