|Posted on Tuesday, January 06, 2004 - 11:58 am: ||
Please see the following information:
Enhancement of Latent Prints on Metal Surfaces, Karie Smith and Chris Kauffman, Journal of Forensic Identification, 51:1 (2001) Comment: Use of 'Brass Black' and 'Aluminum Black' over 'Gun Blue' solutions STECH
|Posted on Tuesday, January 06, 2004 - 10:04 am: ||
I have recently begun working in a fingerprint development lab in the UK and was wondering whether anyone could help me with a few problems we are experiencing:
1) Development of latent prints on metal substrates - we currently use CNA but are having limited sucess rates. Is this due to metal type and/or surface roughness/coating issues?
2) Fingerprint development on firearms - the issues are similar to those outlined above. I have read the previous forum on firearms and am intrigued by the sucess rates that have been achieved.
3) Methods for developing/enhancing prints left in light oil/grease i.e. food fats and petroleum based oils.
Any information would be greatly appreciated.