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Development Color:
Vertical Divider
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Method to Record:
Vertical Divider
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Hazard:
Vertical Divider
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Protective Clothing:
Vertical Divider
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Fume Hood Use:
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Formula
Procedure of Application
Development Complete When
Source of Error
Incompatibilities
Precautions
Storage Container
Safety
Recommendations
Similar Reagent
Sequential Reagent
Formula
Used For: A. Fluorescing fingerprint powders. B. U-V sensitive dye stains. C. Skin tissue examination. D. Darkens blood impressions. E. Fluorescing fluids for refrigerants, transmissions, fuels and coolants. F. Luminesces backgrounds for contrast improvement. Centered Wavelengths:
Procedure of Application
Development Complete When
All the item's surfaces have been examined. Source of Error
Handing items (by handles) in their normal manner may obliterate or smudge visible detail. Incompatibilities
Items that inherently luminescence in the ultra-violet region may interfere with dye stain contrast. Precautions
Ascertain that items do not have liquid or loose components that may spill if the item is subjected to maneuvering. Storage Container
Not applicable. Safety
Utra-violet light absorbing protective eyewear must be worn. Short wavelength Ultra-violet light (180 nm - 280 nm) can cause severe burns to eyes and skin. Recommendations
Adjusting the wavelength (short, medium, or long wavelength) may produce better visualization results. Similar Reagent
Sequential Reagent
Not Necessarily in this Order: Vertical Divider
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Chemical Name
Ultra-Violet Light Surface Used On Non-Destructive for all surfaces Sensitive To Absorption of UV Radiation Vertical Divider
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Ridge Detail Visualized by:
Ultra Violet Light induced Reagent Applicabilities: Porous Surfaces Non-Porous Surfaces Non-Destructive Other Chemical Name(s): U.V. light "Black Light" "Sun Lamp" Far Ultra-violet Near Ultra-violet Middle Ultra-violet UV-A UV-B UV-C |
Process Summary:
A non-destructive technique to note the presence of visible detail. Several models of ultra-violet light sources are available that produce short-wave and long-wave (or both) lights. Detail is visualized either by turning darker upon absorbing ultra-violet light or by luminescing upon emitting ultra-violet light. Yellow or ultra-violet light blocking filters are used during photography of the detail.
A non-destructive technique to note the presence of visible detail. Several models of ultra-violet light sources are available that produce short-wave and long-wave (or both) lights. Detail is visualized either by turning darker upon absorbing ultra-violet light or by luminescing upon emitting ultra-violet light. Yellow or ultra-violet light blocking filters are used during photography of the detail.
Accepted Deviations:
Adjusting the wavelength of the ultra-violet light source may produce better visualization results.
Adjusting the wavelength of the ultra-violet light source may produce better visualization results.
Supporting Reference Materials:
- Advances in Fingeprint Technology 2nd. Ed., Lee, H.C. & Gaensslen, R.E., CRC Press, Boca Raton, FL., 2001.
- Manual of Fingerprint Development Techniques 2nd. Ed., Home Office - Police Scientific Development Branch, White Crescent Press, Ltd., Luton, England, 2001.