Chapter 23. Lab IV-6 Revealing Latent Fingerprints On Brass Cartridge Cases

Equipment and Materials

You’ll need the following items to complete this lab session. (The standard kit for this book, available from http://www.thehomescientist.com, includes the items listed in the first group.)

Materials from Kit

  • Goggles

  • Beaker, 100 mL

  • Cartridge case, brass, fired

  • Centrifuge tube, 1.5 mL

  • Forceps

  • Graduated cylinder, 100 mL

  • Magnifier

  • Stirring rod

Materials you Provide

  • Gloves

  • Camera (optional)

  • Paper towels

  • Hydrogen peroxide, 3%

  • Vinegar, distilled white

  • Specimens: uncoated brass (optional)

Warning

None of the materials used in this lab session present any serious hazard. The 3% hydrogen peroxide solution is irritating and may bleach clothing or other items. As a matter of ...

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