Dye Stain
Sudan Black
1. Shake container of Sudan Black solution before each application and pour a sufficient amount into a glass tray.
2. Submerge item in tray of Sudan Black solution for 2 minutes.
3. Rinse with cold tap water to remove excess dye.
4. Allow item to air dry.
5. Ridges will develop a dark blue color.
6. Capture ridge detail using 1:1 photography.
View under
Normal Vision
Goggles / Filter
None
Development Color
Dark Blue
REFERENCES
Chesapeake Bay Division International Association of Identification. (2009). “Sudan Black”. Retrieved from https://www.cbdiai.org/sudan-black.html
FBI Laboratory Division. (2000). “Sudan Black”, Processing Guide for Developing Latent Prints, pp. 40. Retrieved from https://archives.fbi.gov/archives/about-us/lab/forensic-science-communications/fsc/jan2001/lpu.pdf