alt Hacker NewsThe color configurable bulbs or the high CRI bulbs typically use a 400nm led source and some do use a 380nm but those are much rarer and expensive. Also almost any amount of plastic or glass will significantly absorb that wavelength of UV.
I have a 405nm laser pointer and it makes certain things (any% titanium dioxide) absurdly bright from fluorescence. So you probably aren’t getting UV from those bulbs, but certainly some IR.
"The color configurable bulbs or the high CRI bulbs typically use a 400nm led source and some do use a 380nm but those are much rarer and expensive."
Cree, Nichia, et.al. use ~460nm LED with a cerium-doped aluminum-yttrium garnet cover to convert to white light and have done so for at least half a decade. Just a bare look at the spectral output chart from any company will tell you the wavelength of the base emitter, with a MASSIVE output peak centered around 460nm.
Nobody has used UV as a white LED base for well over a decade or more.