Reagent
Liqui-Nox
1. Mix 20 drops of Liqui-Nox, 20 drops of tap water, and 0.5g of fingerprint powder until a lather is produced into a “shaving cream” consistency.
2. Using a camel hair brush, apply the Liqui-Nox solution onto the adhesive surface of the tape.
3. Leave for 30 – 60 seconds.
4. Rinse under a gentle stream of tap water.
5. Allow tape to air dry.
6. Capture ridge detail using 1:1 photography.
View under
Normal Vision
Goggles / Filter
None
Development Color
Dark Grey
PRO TIP: Contrast of ridge detail may be enhanced by increasing the number of applications or selecting a different colored fingerprint powder based on the background color of the adhesive surface.
REFERENCES
FBI Laboratory Division. (2000). “Liqui-Drox”, Processing Guide for Developing Latent Prints, pp. 51. Retrieved from https://archives.fbi.gov/archives/about-us/lab/forensic-science-communications/fsc/jan2001/lpu.pdf
Parisi, K. M. (1998). Getting the Most of Your Fingerprint Powders. New England Division Journal. Retrieved from http://www.iowaiai.org/getting-the-most-of-your-fingerprint-powders/