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Development Color:
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Method to Record:
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Hazard:
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Protective Clothing:
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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
Stock Solution A: 1 g Rhodamine 6G powder dissolved in 1 liter of Methanol. Stock Solution B: 2 g Basic Yellow 40 dissolved in 1 liter of Methanol. Stock Solution C: 1 g M.B.D. powder dissolved in 1 liter of Acetone. M.R.M. 10 Working Solution: (Combine in the order listed) 3 ml Stock Solution A. 3 ml Stock Solution B. 7 ml Stock Solution C. 20 ml Methanol 10 ml Isopropanol 8 ml Acetonitrile 950 ml Petroleum ether Procedure of Application
Development Complete When
The cyanoacrylate has absorbed the dye stain. Source of Error
Surfaces that absorb too much dye stain will fluoresce too brilliantly to be effective for photography. Incompatibilities
Items that inherently fluoresce in the 490 nm to 555 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
Dark stoppered glass or plastic bottles. Safety
Fume hood use is required when preparing and applying the reagent. Recommendations
The recommended procedure of application is to immerse the item in a tray of the dye. A rinse using Methanol may be necessary to reduce excessive staining by the dye. Similar Reagent
Sequential Reagent
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Chemical Name
M.R.M. 10 Surface Used On Non-Porous Surfaces Sensitive To Cyanoacrylate Deposit Abridged Reagent Sequence
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Ridge Detail Visualized by:
Forensic Light Source induced Reagent Applicabilities: Non-Porous Surfaces Fluorescent Technique Post Cyanoacrylate Other Chemical Name(s): None Working Solution Shelf-life: Six (6) months |
Process Summary:
A mixture of fluorescent dye-stains used to enhance cyanoacrylate-developed latent prints. A fluorescent light source that will output light between 430 nm and 530 nm is required for this process.
A mixture of fluorescent dye-stains used to enhance cyanoacrylate-developed latent prints. A fluorescent light source that will output light between 430 nm and 530 nm is required for this process.
Accepted Deviations:
Spray, immerse or use a squirt bottle to apply the M.R.M. 10 solution to the cyanoacrylate-fumed item.
Spray, immerse or use a squirt bottle to apply the M.R.M. 10 solution to the cyanoacrylate-fumed item.
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.