I have never used the stuff, but use a black light to see fluorescence in
my work, looking at 8x8 inch glass plates in a portable little "dark
room" - really more a box with a viewing hole.
From the website (watch the wrap):
Titebond II Fluorescent contains a dye that, when viewed under a black
light, enables woodworkers to inspect the glue line and assist in the
cleanup process. It is ideal for most porous materials, is easy to use
and cleans up with water.
What you nwill eed is a lamp that emits UV light. Then you need glasses
that protect your eyes. The darker the area, the better you can see the
fluorescence. In general the good lamps (and especially the filters they
use) are not cheap. Also, UV will damage your skin, so do protect eyes
and skin well!
I often wondered if that 'light-absorption' trick actually works.
I was told, that in a window-less room, if you took out the light
switch, and reinstalled it upside down, it would work. The room would
then normally be lit, and turning on the darkening switch, it would
suck the light out of the room.
Either that, or those hydroponic guys in British Columbia are
confusing people or something.
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