Chapter 36. Lab IX-2 Presumptive Color Tests for Explosives Residues

Equipment and Materials

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

Materials from Kit

  • Goggles

  • Diphenylamine reagent

  • Lead nitrate, 0.1% (nitrate known)

  • Methylene blue reagent, part A

  • Methylene blue reagent, part B

  • Modified Griess reagent, part A

  • Modified Griess reagent, part B

  • Pipettes

  • Sodium nitrite, 1% w/v (nitrite known)

  • Spot plate, 12-well

  • Specimen: chlorate known

  • Specimen: perchlorate known

Materials you Provide

  • Gloves

  • Acetone

  • Cotton swabs

  • Rocks, broken tile or flowerpot, etc. (see text)

  • Vinegar, distilled white

  • Water, distilled or deionized

Warning ...

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