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ThermaNin
Posted: Mon Jul 11, 2005 10:47 am
by Michelle
Just curious to see if anyone has tried ThermaNin? If so, please share how it worked for you. Thanks.
ThermaNin
Posted: Mon Jul 11, 2005 11:49 am
by Mark
Michelle,
We are in the process of testing and validating that right now. I will have my examiner doing the research reply to this when she is finished.
Mark
ThermaNin
Posted: Tue Jul 12, 2005 5:24 pm
by Whisler
I've read up on the ThermaNin and it does look like a positive addition to an arsenal of processing products, but it's teetering on redundancy of ninhydrin and the"dry-hydrin" technique, where ninhydrin vapors seep through a cloth onto the thermal paper without darkening the paper.
I've used the dry-hydrin many times while testing the concept and on actual evidence with suitable level 2 detail.
Dry-hydrin
Posted: Wed Jul 13, 2005 4:30 am
by Michelle
Could you please explain the "dry-hydrin" process? I am not familiar with this.
Dry Hydrin
Posted: Wed Jul 13, 2005 7:03 am
by Whisler
The best explaination and directions I've found is at:
http://www.csigizmos.com/products/laten ... rynin.html
This article also has references to other methods contained in Scott's Fingerprint Mechanics book and the Journal of Forensic Identification (Vol. 45 No. 2, 1995) technical report.
Happy Hunting.
Thermanin
Posted: Tue Aug 16, 2005 9:39 pm
by Christie
Hi Michelle,
We have recentley completed a study on thermanin compared to indanedione, and dry ninhydrin. We have trialled various suggested solvents.
Basically what we have found is that 1,2-indanedione is better than thermanin for thermal paper. The thermanin is also not very stable in solution and is a great deal more expensive than the other reagents (even indanedione).
If you want any more information please let me know. My email address is
christie.s.wallace@uts.edu.au