Invisible Fluorescent Crayon

Tri-Tech Forensics

$4.20
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 W-CRINV
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Our crayons are a popular item to invisibly mark articles such as currency, tires, paper, wood, metal, glass, etc., for identification and theft detection purposes. They are practically invisible on most backgrounds but highly fluorescent when exposed to a long or short wave UV lamp. We offer white, yellow, and orange options.

Notice: This item can be purchased by law enforcement agencies or private investigators only.