BASIC RED 28

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Chemical Name:
BASIC RED 28
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
|
*** Basic Red 28 ***
|
Forensic Light
|
R.A.Y.
|
Forensic Light

BASIC RED 28 FORMULA:
STOCK SOLUTION:
(Combine in order listed)

0.2 g Basic Red 28 dye
  dissolved in 
60 ml Propanol, then add
40 ml Acetonitrile.


WORKING SOLUTION:

 5 ml Stock Solution
95 ml Petroleum ether

PROCEDURE OF APPLICATION
1.
Treat item with cyanoacrylate.

2.
Submerge the item in the reagent
or use a squirt bottle to apply.

3.
Allow item to air dry.

4. 
Distilled water rinse.
Again allow item to air dry.

5.
Examination under a laser or 
Forensic Light Source at 
470 nm to 550 nm. 
Absorption Max is 510 nm.
Use orange colored goggles.

6.
Photograph results using 
an orange or bandpass 550(BP35)
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:

Six (6) months.

Process Summary:
A fluorescent dye-stain used to enhance cyanoacrylate-developed latent prints. A forensic light source that will output light between 470 nm to 550 nm is required for this process.
Accepted Deviations:
This reagent can be modified by the addition of Basic yellow 40 dye to provide a wider range of 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. Advances in Fingeprint Technology 2nd. Ed., Lee, H.C. & Gaensslen, R.E., CRC Press, Boca Raton, FL., 2001.
4. Manual of Fingerprint Development Techniques 2nd. Ed., Home Office - Police Scientific Development Branch, White Crescent Press, Ltd., Luton, England, 2001.
5. Technical Notes, Lightning Powder Co. Inc., Salem, OR., 2001.

Return to: Main Page   ||  Non-Porous Surfaces  ||  Fluorescent Techniques  ||  Post-Cyanoacrylate  ||  Metal Surfaces  ||  Glass Surfaces  ||  Plastic Surfaces  ||  Cartridges  ]