Are UVB bulbs good as long as they have not been opened?

Beansbanana

Hatchling Member
I have a UVB bulb that’s probably close to a year old that I bought as a back up bulb. I’ve never used it is it still good do you think it’s an Arcadia 12% and I was hoping to just use it but I wanted to make sure first that it wouldn’t have gone bad since it’s just been sitting in the box for one year.
 

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