Question about mold

[Archive]

Posted By: davidcycleback

UVC, shortwave ultraviolet light, kills mold on surfaces (where the light touches). I don't know what it would do to the mold inside the card. The blacklight we use for baseball cards is UVA, longwave uv light. UVC is not natural on earth and is dangerous to human eyes and skin, but can't penetrate normal glass or even clothes, so it can be used safetly if one is careful and used it for short durations. It is used to kill anthrax, SARS, bird virus and other very nasty stuff. You can buy a handheld UVC light, as they are used to clean air, science labs, etc. Just use it carefully.

For those who use a blacklight and have had their pants scared off, the UVA blacklight normally talked about on this board is safe, safer than sunlight. UVA and UVC are different frequencies, with blacklight being just a bit outside of visible light. In fact, many birds, which have have a different range of light sensors in their eyeballs, see blacklight.