Carrier Solvents for Fingerprinting Formulations
3M™ Novec™ Engineered Fluid HFE-7100 is an ideal carrier solvent for Ninhydrin and DFO formulations used for latent fingerprint development on porous surfaces. Novec fluid HFE-7100 is a selective solvent - as demonstrated by its inertness to most inks - and does not appreciably dissolve the amino acids transferred to the porous substrate in a fingerprint. Its surface tension is much lower relative to hydrocarbon solvents like petroleum ether (13.6 dynes/cm at 25°C vs. 20 dynes/cm at 25°C), allowing Novec fluid HFE-7100 to more easily and thoroughly carry dissolved Ninhydrin or DFO to where it is most useful - namely the edges of fingerprint ridges. And because HFE-7100 fluid does not absorb moisture, background "noise" on the print is minimized.
3M™ Novec™ Engineered Fluid HFE-7100 has been identified as an excellent carrier solvent in latent fingerprint development on porous surfaces by three independent forensic laboratories - Fingerprint Department, Insitut de Recherche Criminelle de la Gendarmie Nationale, France; Fingerprint Research Group, Police Scientific Development Branch, United Kingdom; and Forensic Services Division, Oregon State Police, Oregon, United States.
They found that 3M™ Novec™ Engineered Fluid HFE-7100:
* produces ridge crispness as good or better than CFC-113 with both Ninhydrin and DFO
* causes minimal running or smearing in a wide variety of inks and substrates
* has an excellent safety and environmental profile
To purchase HFE-7100, please visit one of our distributor sites:
* Lightning Powder Company, Inc. (http://www.redwop.com/)
* Lynn Peavey Company (http://www.lynnpeavey.com/Store/)
* Sirchie Finger Print Laboratories, Inc. (http://www.sirchie.com/)
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