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A Comparative Research of Two Lifting Methods: Electrostatic Lifter and Gelatin Lifter

Authors

  • Sarena Wiesner M.Sc.,

    1. Toolmarks and Materials Laboratory, Division of Identification and Forensic Sciences (DIFS), Israel Police H.Q., Jerusalem 91906 Israel.
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  • Tsadok Tsach M.Sc.,

    1. Toolmarks and Materials Laboratory, Division of Identification and Forensic Sciences (DIFS), Israel Police H.Q., Jerusalem 91906 Israel.
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  • Charles Belser,

    1. Forensisches Institut Zürich, Kriminaltechnik 1, Zeughausstrasse 11, CH-8004 Zürich Postanschrift: Postfach, CH-8021 Zürich, Switzerland.
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  • Yaron Shor M.Sc.

    1. Toolmarks and Materials Laboratory, Division of Identification and Forensic Sciences (DIFS), Israel Police H.Q., Jerusalem 91906 Israel.
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  • Presented at the 6th SPTM Meeting, May 29–June 1, 2007, in Copenhagen, Denmark.

Additional information and reprint requests:
Sarena Wiesner, M.Sc.
Toolmarks and Materials Laboratory
DIFS, Israel Police Headquarters
Jerusalem 91906
Israel
E-mail: simanim@police.gov.il

Abstract

Abstract:  Two-dimensional dust shoeprints are often of very high resolution and contain unique features. Lifting these prints in the most effective method may contribute much to preserving these fine details. A research was conducted by experts from Israel and Switzerland to compare gelatin lifters and electrostatic lifters for lifting shoeprints. Several substrates were chosen, and on each material a set of dry dust shoeprints was made. A set of wet prints was made on paper as well. The shoeprints were approximately of the same quality, and the only variable was the nature of the material. On substrates indifferent to the method used, the preferable sequence was tested. Gelatin lifter was superior on most substrates and for wet prints. The superior sequence for using both methods is electrostatic lifting followed by gelatin lifter.

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