Fume hood uses in laboratory

    when should you use a fume hood
    when to use a fume hood
    when should the chemical fume hood be used
  1. When should you use a fume hood

    2. Fume hood working principle

  2. Fume hood working principle
  3. Fume hood sash
  4. Fume hood price
  5. How to turn on a fume hood
  6. When working in a fume hood, what is the best position of the hood sash?

    7. Fume hood price!

    Fume Hoods: Use, Inspection and Maintenance

    Fume hoods are a primary method of exposure control in the laboratory. A fume hood is a ventilated enclosure that usually vents separately from the building’s heating, ventilation and air conditioning (HVAC) system and not recirculated into the building.

    Fume hoods should be used when working with toxic compounds or compounds with a boiling point below 120°C. Fume hoods, or other effective local ventilation, must be provided and used when the materials used will exceed exposure limits in the laboratory.

    Standards for determining permissible exposure limits include:

    • Occupational Safety and Health Administration Permissible Exposure Limits (OSHA PELs)
    • National Institute for Occupational Safety and Health Recommended Exposure Limits (NIOSH RELs)
    • American Conference of Governmental Industrial Hygienists threshold limit values (ACGIH TLVs®)
    • American Industrial Hygiene Association Workplace Environmental Exposure Limits (AIHA WEELs)

    Types of fume hoods

    Types of fume hoods at the University include chemical, radioisotope and perchlori