During the investigation of the Mondelo murder, police have turned
their suspicion on business partner John Wayne Gretsky, finding
questionable receipts on his des.
Your students must determine if these receipts are legitimate business
documents or evidence of a crime. To do this, students must determine
objective criteria for hand writing analysis, and then apply these
criteria when examining suspect receipts.
After analyzing the handwriting, students will dissolve the ink from
numbers on the suspect invoices. Then, using thin layer chromatography,
they will create an ink profile for each of the samples taken from the
reciept. From this information, students will determine if the same ink
was used to fill out the entire form. Finally, by combining where
different inks were used with what reciepts are suspected of forgery,
students can develop a complete theory of the suspected forgery.
As in all Lyle and Louise modules, this kit is geared to high school
and undergraduate courses, and is matched to National Science Education
- 12 TLC plates
- 6 development chambers
- 6 bottles of solvent w/ droppers
- 6 protractors
- 100 microcaps
- Suspicious receipts w/ copies
- Fully illustrated teacher's manual with technique background
Required Equipment ( not included )
- 12 Glass Microscope Slides
- Forceps (6 - 12)
- Lab gloves
This item can be shipped and stored at room temperature.