Compact UV Lamp, LW, 4W, UVL-21

This UVP, Inc. Model UVL-21 Compact UV lamp is a hand-held 4-watt model with 365 nm longwave. It is lightweight and uses A/C current with an 8 ft. cord. This unit provides higher intensity for greater fluorescence.

Model UVL-21 Features...

• 4 watt portable lamp
• Wavelength is 365 nm longwave.
• Durable plastic construction .
• Lamp cord, 8 ft.
• Dimensions: 7.8 " x 2.8" x2.1" (198 x 71 x 53mm)
• Weight 1 lb.
• Use with optional J-124 stand for hands-free operation.

Applications Include...

LOCATE PET URINE SOURCES... The amber-colored pet urine is composed of protein metabolism waste products, with feline diets typically protein richer than dogs. The urine will glow in the dark using a blacklight (longwave UV light). Since the UV light is relatively weak, it works best to darken the room as much as possible. Using lower wattage blacklights (4 watt) require being close to the inspection area with it as dark as possible. FORGERY ANALYSIS Forgeries of bank notes, standard checks and travellers' checks are mainly printed on inferior bleached paper or photocopied. Forgeries will glow under UV light and bona fides will be completely dull. Many newer credit cards have an invisible imprint on the front. American Express uses "AMEX". If no imprint, the card is a forgery. Alterations of legal documents such as careful erasure or ink eradication and altering paper textures are detectable with UV light. CURRENCY VERIFICATION Authentic U.S. paper currency has embedded stripes which will fluoresce under ultraviolet light as follows: $5 glows blue, $10 glows orange, $20 glows green, $50 glows yellow, and $100 glows red. The $1.00 bill has no stripe. GEMSTONE and MINERAL INSPECTION UV Light can react with the chemicals of a mineral specimen and cause it to glow, called fluorescence. Color and intensity of the fluorescence can identifty many materials. Some minerals and gemstones will fluoresce under shortwave UV ligh and not fluoresce under longwave.