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256bits
#3
Nov30-12, 07:43 AM
P: 1,414
Try a US $20 dollar bill and look for the strip. Just make sure it is the correct year(s) of issue. Not sure what intensity and frequency is required for this to work.
http://0.tqn.com/d/chemistry/1/0/A/X...blacklight.jpg

Alos petroleum jelly spread on a surface will glow blue under a black light (UV)