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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
Working Solution (Combine in the order given)
Procedure of Application
1. a) Tray immersion or squirt bottle. - 5 seconds. -or- b) Water rinse - Squirt bottle application or gently running stream. - 10 seconds 2. View under an Ultra-violet lamp in the 280 nm to 365 nm range. Use ultra-violet protection goggles. 2a. View under a Forensic Light Source in the 435 nm to 480 nm range. Use yellow colored goggles. 3. Photograph results using a 2-A haze, yellow colored or 515(BP 35) bandpass filter. Development Complete When
The cyanoacrylate has absorbed the dye stain. Source of Error
Do not mix the working solution using a magnetic stirrer. Surfaces that absorb too much dye stain will fluoresce too brilliantly to be effective for photography. Incompatibilities
Items that inherently fluoresce in the 500 nm range will interfere with the dye stain fluorescence. Precautions
Avoid excess build-up of cyanoacrylate, since this may result in ridge detail depicting little contrast to the strongly fluorescent surface. Storage Container
Clear or dark stoppered glass or plastic bottles. Safety
Use Ultra-violet protection goggles when working with long-wavelength ultra violet light sources. Prepare the working solution in a Fume hood. Recommendations
The recommended procedure of application is to soak the item in a tray of the dye. A rinse using Petroleum ether may be necessary to avoid excessive staining by the dye. Similar Reagent
Sequential Reagent
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Chemical Name
Ardrox Surface Used On Non-Porous Surfaces Sensitive To Cyanoacrylate deposit, UV Induced Abridged Reagent Sequence
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Ridge Detail Visualized by:
Ultra-Violet light induced Forensic Light Source induced Reagent Applicabilities: Post Cyanoacrylate Non-Porous surfaces Fluorescent technique Other Chemical Name(s): Ardrox P-133D Tracer tech P-133D Working Solution Shelf-life: Six (6) months |
Process Summary:
A fluorescent dye-stain used to make cyanoacrylate-developed latent prints more visible. A fluorescent light source or ultra-violet lamp that will output light in the 280 nm to 480 nm region is required for this process.
A fluorescent dye-stain used to make cyanoacrylate-developed latent prints more visible. A fluorescent light source or ultra-violet lamp that will output light in the 280 nm to 480 nm region is required for this process.
Accepted Deviations:
The working solution may be applied by either dipping or with a squeegee bottle. Some researchers advise to allow the cyanoacrylate-developed prints to "sit" overnight prior to applying the dye stain.
The working solution may be applied by either dipping or with a squeegee bottle. Some researchers advise to allow the cyanoacrylate-developed prints to "sit" overnight prior to applying the dye stain.
Supporting Reference Materials:
- Minutiae Magazine, Summer Special 1994, Issue No. 24, pg.7.
- "Chemical Formulas and Processing Guide for Developing Latent Prints", U.S. Dept. of Justice, pg. 47-48, 1994.