R.A.Y.

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

Orange fluoresence

Orange or Red 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
|
Rhodamine 6G
|
Forensic Light
|
*** R.A.Y. ***
|
Forensic Light

R.A.Y. FORMULA:
R.A.Y. WORKING SOLUTION
(Combine in the order listed.)


 .5 g  Basic Yellow 40 dye
 10 ml Glacial acetic acid
.05 g  Rhodamine 6 dye
  4 ml Ardrox P133D
450 ml Isopropanol 
	- or -
       denatured Ethanol
 40 ml Acetonitrile 

PROCEDURE OF APPLICATION
1.
Spray, dip, or use a squirt 
bottle to apply R.A.Y. 

2.
Examination under a laser or 
Forensic Light Source at 
450 nm to 550 nm. 
Use orange or red 
colored goggles.

3.
Photograph results using 
orange  or red barrier filter.



Ridge Detail Visualized by:

Forensic Light Source induced.


Reagent Applicabilities:

Post-Cyanoacrylate
Non-Porous surfaces
Fluorescent technique


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 365 nm and 550 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.5.

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