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Forensics

Forensics. Lin Wozniewski lwoz@iun.edu. Safety. Students must wear: Closed shoes Slacks or skirts that come to the ankles Lab coat or lab apron Indirect vent or unvented chemical splash proof goggles. No impact glasses or visorgogs are permitted. Students can bring.

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Forensics

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  1. Forensics Lin Wozniewski lwoz@iun.edu

  2. Safety • Students must wear: • Closed shoes • Slacks or skirts that come to the ankles • Lab coat or lab apron • Indirect vent or unvented chemical splash proof goggles. No impact glasses or visorgogs are permitted

  3. Students can bring • Spot plate or something to do reactions in • Micrspatula or something to get powders out • Forceps/ Metal Tongs • pH paper • Magnet • Hand lens

  4. Students Can Bring • Test Tubes • Test Tube rack • Test Tube holder • Eye droppers • Funnel • Filter Paper • Battery Conductivity meter • Flame loop • Ruler • Calculator

  5. Students Can Bring • Slide & cover slip • Pencil • Paper towels • 1 sheet of paper on which anything handwritten is acceptable. • A writing instrument • Nothing else is allowed

  6. Supervisors will provide • Unknowns • Iodine Solution • 2 M HCl • Benedicts Solution • 2 M NaOH • Differential Density materials • Chromatography Materials • Wash bottle with Distilled or ROI water • Candle and matches

  7. Supervisors will Provide • Bunsen Burner or other heat source of similar BTU • Hot water bath • Waste Container • (Microscope?) • (Other reagents?)

  8. Main Focus • Chemical Analysis • Polymers • Chromatography • Crime Scene Physical Evidence • How to prepare students • Resources

  9. How To Prepare Students • Have students develop a dichotomous key for identifying chemicals • Practice identifying chemicals in as short a time as possible. • Practice identifying plastics • Practice identifying hairs (only human, dog, cat possible) • Practice identifying fibers

  10. How to Prepare Students • Practice doing pen chromatograms/doing Rf • Practice doing juice chromatograms/doing Rf • Practice doing TLC/doing Rf • Practice identifying masses from mass specs • Practice identifying fingerprints • Practice matching DNA chromatograms/electropherograms • Practice matching shoes & tires to their tracks • Practice blood typing • Do a liquid spatter activity • Practice using a waste container • Do a glass refractive index activity

  11. Resources • The National SO Website www.soinc.org • The information on my thumb drive

  12. Questions? • Thank You

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