Forensic Science International

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Forensic Science International Effect of hand sanitizer on the performance of fingermark detection techniques Scott Chadwick, Melissa Neskoski, Xanthe Spindler, Chris Lennard, Claude Roux Forensic Science International Volume 273, Pages 153-160 (April 2017) DOI: 10.1016/j.forsciint.2017.02.018 Copyright © 2017 Elsevier B.V. Terms and Conditions

Fig. 1 Schematic diagram of porous substrate set-up for fingermark deposition. Forensic Science International 2017 273, 153-160DOI: (10.1016/j.forsciint.2017.02.018) Copyright © 2017 Elsevier B.V. Terms and Conditions

Fig. 2 Representative images of hand sanitized and NHS fingermarks of the weak donor developed with black magnetic powder. Forensic Science International 2017 273, 153-160DOI: (10.1016/j.forsciint.2017.02.018) Copyright © 2017 Elsevier B.V. Terms and Conditions

Fig. 3 Average fingermark assessment scores of all donor’s EcoHydra® and Deb® HS and NHS fingermarks for black magnetic powder. Forensic Science International 2017 273, 153-160DOI: (10.1016/j.forsciint.2017.02.018) Copyright © 2017 Elsevier B.V. Terms and Conditions

Fig. 4 Representative images of non-alcoholic hand sanitized and non-hand sanitized fingermarks from the weak donor developed with IND-Zn and NIN. Forensic Science International 2017 273, 153-160DOI: (10.1016/j.forsciint.2017.02.018) Copyright © 2017 Elsevier B.V. Terms and Conditions

Fig. 5 Average fingermark assessment scores of all donor’s EcoHydra® and Deb® HS and NHS fingermarks for each porous-surface development technique [indanedione-zinc (IND-Zn), ninhydrin (NIN) and physical developer (PD)]. Forensic Science International 2017 273, 153-160DOI: (10.1016/j.forsciint.2017.02.018) Copyright © 2017 Elsevier B.V. Terms and Conditions

Fig. 6 Representative images of aged hand sanitized and non-hand sanitized fingermarks from the weak donor developed with IND-Zn and NIN. Forensic Science International 2017 273, 153-160DOI: (10.1016/j.forsciint.2017.02.018) Copyright © 2017 Elsevier B.V. Terms and Conditions

Fig. 7 Average fingermark assessment scores of all donor’s EcoHydra® and Deb® HS and NHS fingermarks on samples aged for two weeks developed with either Ind-Zn or Ninhydrin. Forensic Science International 2017 273, 153-160DOI: (10.1016/j.forsciint.2017.02.018) Copyright © 2017 Elsevier B.V. Terms and Conditions

Fig. 8 Images of EcoHydra®, Deb®, and NHS fingermarks from the medium donor following IND-Zn treatment at 0min, 2.5min, 5min, and 10min after hand sanitizer application. Forensic Science International 2017 273, 153-160DOI: (10.1016/j.forsciint.2017.02.018) Copyright © 2017 Elsevier B.V. Terms and Conditions

Fig. 9 Average scores for all donors from water, BAC, Deb® and Ecohydra® treated marks. Forensic Science International 2017 273, 153-160DOI: (10.1016/j.forsciint.2017.02.018) Copyright © 2017 Elsevier B.V. Terms and Conditions

Fig. 10 Representative images of the BAC-treated, water-treated and NHS fingermarks for the strong, medium and weak donors following IND-Zn treatment. Forensic Science International 2017 273, 153-160DOI: (10.1016/j.forsciint.2017.02.018) Copyright © 2017 Elsevier B.V. Terms and Conditions