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Selecting and Using Laboratory Hoods Safely

Coming Spring 2026

7 hours


This course provides a working knowledge of how laboratory hoods work, available hood options, relevant codes, and how hood selection impacts hood operation. This course is designed for anyone who works in a laboratory or those new to the laboratory environment.



During this course, you will:

  • Gain a better understanding of how laboratory hoods work, available hood options, and how hood selection impacts hood operation
  • Explore the major considerations involved in evaluating, selecting, installing, testing, and using hoods
  • Learn how to adapt good engineering practices to improve the safety of your laboratory hood installations and operations
  • Gain an understanding of applicable codes, ventilation considerations, and alternatives to hoods


Instructor: Richard Palluzi

Course Hours

You Will Earn

You Will Earn

All hours listed are in Eastern Time (ET)

9:00 am – 4:00 pm

You Will Earn

You Will Earn

You Will Earn

0.7 Continuing Education Units

7 Professional Development Hours 

Course Details

Ventilation Systems

  • Fixed volume
  • Variable air
  • Auxiliary air

Code Requirements

  • OSHA 1910.1450
  • NFPA-45 Fire Protection for Laboratories Using Chemicals
  • AIHI Z9.5 Laboratory Ventilation 

Hood Design and Operation

  • Hood terminology
  • Airfoils
  • Bypass grills
  • Sash types
    • Vertical
    • Horizontal
    • Combination
  • Backup power

Hood Alarms

  • Code requirements
    • NFPA 45
  • Function
  • Types
  • Common problems and their solutions 

Hood Testing and Certification

  • Certifying a hood
  • ASHRAE 110 Methods of Testing Performance of Laboratory Hoods
  • Review of test methods
  • Defining a satisfactory test

Using Hoods Safely

  • Limiting hood openings
  • Overcrowding
  • Storage
  • Depth of hood
  • Fire and explosion potential
  • Blast resistance 

Hood Alternatives and Their Issues

  • Ventilated enclosures
  • Local exhaust
  • Ductless hoods
  • Laminar flow hoods 

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