R.A.M.

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Chemical Name:
R.A.M.
Surface Used On:
Non-porous surfaces.
Sensitive To:
Cyanoacrylate deposit.
Development Color: Method to Record: Hazard: Protective Clothing: Fume Hood Use:

Yellow fluorescence

Orange filter

Yes
Reagent Characteristics

Development Complete When:

Source of Error:

Incompatibilities:

Precautions:

Storage Container:

Safety:

Recommendations:


Similar Reagents



Sequential Reagents

(Not necessarily in this order.)



Abridged Reagent Sequence


Visual Examination
|
Forensic Light
|
Cyanoacrylate fuming

*** R.A.M. ***
|
Forensic Light

R.A.M. FORMULA:
	 Rhodamine 6G STOCK SOLUTION 
 
1 g Rhodamine 6G dissolved in
1 liter Methanol 
 
 
	M.B.D. STOCK SOLUTION 
 
1 g M.B.D. dissolved in
1 liter Acetone 
 
 
	R.A.M. WORKING SOLUTION
(Combine in the order listed.)
 
  3 ml Rhodamine Stock Solution
  2 ml Ardrox P133D
  7 ml M.B.D. stock Solution 
 20 ml Methanol 
 10 ml Isopropanol 
  8 ml Acetonitrile 
950 ml Petroleum ether 
 
PROCEDURE OF APPLICATION
1.
Spray, dip, or use a squirt bottle
to apply R.A.M. to the item.
 
2.
Examination under a Forensic Light Source 
at 415 nm to 485 nm. 

Absorption Max is 460 nm.
Use orange colored goggles.
 
3.
Photograph results using 
orange barrier filter.
 


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:

One (1) month.

Process Summary:

A mixture of fluorescent dye-stains used to enhance cyanoacrylate-developed latent prints. A fluorescent light source that will output light between 415 nm and 485 nm is required for this process.

Accepted Deviations:

The excitation wavelength may be varied to determine which produces the best fluorescence.

Supporting Reference Materials:

1. Minutiae Magazine, Summer Special 1994, Issue No. 24, pg.7.

2. "Chemical Formulas and Processing Guide for Developing Latent Prints", U.S. Dept. of Justice, 1994, pp. 47-48.

3. Lennard, C.J. & Margot, P.A., "Sequencing of Reagents for the Improved Visualization of Latent Fingerprints", Jor. Forensic Identification, Vol. 38, No. 5, Sept./Oct. 1988, pp. 197-210.

4. Advances in Fingeprint Technology 2nd ed., Lee, H.C. & Gaensslen, R.E., CRC Press, Boca Raton, FL., 2001, pp. 123-124.

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