Blood Enhancement
Coomassie Blue
1. The prints or footwear impression must be fixed to the surface prior to application of Coomassie Blue to prevent loss of detail.
2. Select an application method.
Tray immersion: Submerge item in Coomassie Blue solution for 30 – 90 seconds.
Spray application: Spray Coomassie Blue solution onto item until coated and leave for 30 – 90 seconds.
3. Rinse with water or apply Coomassie Blue Rinse/Destain for 1 minute.
4. Ridges will develop a dark blue color. Repeat steps 2 and 3 as necessary until maximum contrast is achieved.
5. Allow item to air dry.
6. Capture ridge detail with 1:1 photography.
View under
Normal Vision
Goggles / Filter
None
Development Color
Dark Blue
REFERENCES
Chesapeake Bay Division, International Association for Identification. (2010). Latent Fingerprint Processing Techniques – Selection & Sequencing Guide. “Coomassie Blue”. Retrieved from https://www.cbdiai.org/coomassie-blue.html
FBI Laboratory Division. (2000). Processing Guide for Developing Latent Prints. “Coomassie Brilliant Blue”, pp. 47 – 48. Retrieved from https://archives.fbi.gov/archives/about-us/lab/forensic-science-communications/fsc/jan2001/lpu.pdf
Sirchie. (2010). Technical Information: Coomassie Blue. Retrieved from https://www.sirchie.com/media/resourcecenter/item/l/v/lv512_ti08-597eng-rev3e.pdf