Environmental Health & Safety

University of Colorado Boulder


Fume Hood Questions and Answers

General Description

Use a chemical fume hood anytime your work involves:

  • Chemicals with a National Fire Protection Association (NFPA) Health rating of 3 or
  • Toxic volatile materials (chloroform,
  • Flammable
  • Carcinogens or particularly hazardous
  • A procedure that may create an aerosol of a toxic
  • Reactive or explosive materials or chemicals that may
  • Toxic gases (NH3, CO, F2, Cl2, H2S, NO2,
  • Odorous materials, both hazardous and non-hazardous