Archive of the former Yahoo!Groups mailing list: Homebrew PCBs

HI,



Fluorescent tubes can be used safely in the dark room. These are special
types which are designed not to have any UV radiation. There are different
types of yellow fluorescent tubes. It depends if the tube is a typical
yellow color tube with some UV leakage or a special tube with just yellow
alight and UV removed.

A way around this are UV sleeves to stop fluorescent tubes causing color
fading. UV light has been known to cause color fading and special sleeves UV
preventing sleeves are available to remove UV radiation, and could be used
to convert normal yellow fluorescent tubes to be safe in the dark room.

Hope this helps?

Cheers

Tim Gibbs



My 60 watt incandescent yellow bug light finally burned out after years of
use. I checked several stores (Walmart, Home Depot, Lowes) for a replacement
but none found. Walmart had a 90 watt one but I think that would be too
bright for my dry film darkroom use.

Has anyone had any experience with the yellow fluorescent bulbs used as a
dark room bulb? I'm concerned that since it is a fluorescent source it may
still emit UV. Or does the yellow glass effectively block the UV?





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