UV
Light Pen Applications
Criminology:
Check
crime scenes for fingerprints (using fluorescing dusting powder)
and for some bodily fluids. Locate
the presence of accelerants in arson investigators.
Geology
& Gemology:
Reveals
fluorescent activity in minerals and gems. Jewelers for example
use UV light to differentiate YAG from tanzanite or synthetic
corundum.
HVAC
and Automobile service:
By
adding UV powder or liquid to a system leaks can be identified
under UV light.
Food
Industry:
It
is necessary to identify rodent presence in all areas of the food
industry. Although
rodent urine and hair may be invisible in normal light they
fluoresce under UV light.
Pest
Control:
Identifies
the presence of rodents, scorpions, lice and other insects.
Medical:
Locates
dermatological bacteria that glow under UV light. Used in
conjunction with an indicator fluid in eyes to check for foreign
objects and as a skin treatment for psoriasis, Lichen Planus,
eczema, dandruff, and seborrheic dermatitis under a doctor's
supervision.
Manufacturing:
Used
to cure many special epoxies and glues.
Customs:
Some
passports have images visible only under UV light.
Document and forgery analysis: Alterations or
changes will sometimes become directly visible when illuminated by
UV light.
Access
control:
Often
access to events is controlled using an invisible mark on a hand
or card that fluoresces under UV light.
Currency
and stamp verification:
U.S.
and many other currencies and stamps contain images visible only
under UV light.
Painting
and carpet repair and verification:
Many
modern inks, paints and dyes may look identical to old colorings
under visible light. However, under UV, differences can be seen
because the chemical composition of newer substances usually
includes synthetic materials.
