UV analysis lamp
The UV analysis lamp is a mains-powered UV analysis lamp with handle (for 120 V, 50 Hz). It is suitable for long- and short-wave UV light and is equipped with a special filter for both wavelength ranges. A tripod is available as an accessory.
In the gemmological field, UV lamps support identification by generating material-typical luminescence. A distinction is made between the two luminescence phenomena – fluorescence (not afterglow) and phosphorescence (afterglow).
Counterfeit banknotes and other important documents can also be easily identified using UV and analysis lamps. When objects are exposed to UV light, their fluorescent and phosphorescent areas are revealed. Bills, credit cards, driver’s licenses, passports and ID cards all have fluorescent markers. UV-sensitive ink and watermarks that are invisible under normal light are found on most passports. Banknotes often have images or colored fibers worked into the paper that are only visible under ultraviolet light.
Technical details at a glance:
■ UV analysis lamp
■ Short-wave light (wavelength: 254 nm)
■ Long-wave light (wavelength: 366 nm)
■ Power per illuminant: 6 W
■ Power supply: 120 VAC
■ Lamp dimensions (W × D): 145 mm x 35 mm
■ Dimensions (W × H × D): 260 mm x 70 mm x 60 mm
■ Weight: 1233 g
You can find practical examples of the use of the UV analysis lamp for examining gemstones and semi -precious stones, for example in the article: Recognizing counterfeit diamonds under UV light .
More information on the examination method with UV light and phosphorescence as well as fluorescence can be found in the Luminescence method article.