ThermaNin

[Michelle]

Just curious to see if anyone has tried ThermaNin? If so, please share how it worked for you. Thanks.

[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

[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.

[Michelle]

Could you please explain the "dry-hydrin" process? I am not familiar with this.

[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.

[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