Chapter 19. Lab IV-2 Revealing Latent Fingerprints Using Iodine Fuming

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

  • Magnifier

  • Iodine crystals

Materials you Provide

  • Gloves

  • Iodine fuming chamber (see text)

  • Scanner and software (optional)

  • Starch water (see text)

  • Specimens: paper with latent fingerprints

Warning

Iodine crystals are toxic and corrosive and stain skin and clothing. (Stains can be removed with a solution made by dissolving a vitamin C tablet in water.) Iodine vapors are toxic and irritating. Perform this experiment only outdoors or in a well-ventilated area. ...

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