UV LIGHT APPLICATIONS
Lab:
Gel Electrophoresis Photography, Visualization of stained DNA, bacterial destruction,
DNA/RNA cross linking to nylon membranes, hybridization ovens for the Laboratory,
thin layer chromatography, ultraviolet shadowing of nucleic acids on acrilyamide
and agrarose gels.
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.
HVAC and Automobile service:
By adding UV powder or liquid to a system, leaks can be identified under UV light.
Criminology:
Check crime scenes for fingerprints (using fluorescing dusting powder) and for
some bodily fluids. Locate the presence of accelerants in arson investigations.
Geology & Gemology:
Reveals fluorescent activity in minerals and gems. Jewelers, for example, use
UV light to differentiate YAG from tanzanite or synthetic corundum.
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.
Pest Control:
Identifies the presence of rodents, scorpions, lice and other insects.
Manufacturing:
Used to cure many special epoxies and glues.
EPROM Erasure:
EPROM chips contain a small window, which when exposed to UV light, erases the
memory on the chip.
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.
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