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:

Orange 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:
1. Rhodamine 6G STOCK SOLUTION 

1 g Rhodamine 6G dissolved in
1 liter Methanol 


2. M.B.D. STOCK SOLUTION 

1 g M.B.D. dissolved in
1 liter Acetone 


3. 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 laser or 
Forensic Light Source at 
415 nm to 530 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 530 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, pg. 47-48, 1994.
3. Lennard, C.J. & Margot, P.A., "Sequencing of Reagents for the Improved Visualization of Latent Fingerprints", Jor. Forensic Identification, Vol. 38, No. 5, pp. 197-210, Sept./Oct. 1988

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