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An Introduction to Laboratory Fume Hood Performance Testing

Topics of Discussion

What is a Fume Hood? Why do we Test Fume Hoods? Brief History of ASHRAE 110 ASHRAE 110: Face Velocity Testing ASHRAE 110: Smoke Visualization ASHRAE 110: Tracer Gas Containment ASHRAE 110: Test Types The Proposed Latest Edition of ASHRAE 110 Other Fume Hood Performance Tests

What is a Fume Hood?

A Laboratory Fume Hood is a safety device where hazardous chemicals can be handled safely while fumes and vapors generated by these chemicals are exhausted out of the building, when connected to a properly designed laboratory ventilation system.

What is a Fume Hood?

Speed of the Air is Face Velocity

What is a Fume Hood?

Above all else, laboratory fume hoods are SAFETY DEVICES.

Why Test Fume Hoods?

A method of evaluating the fume hood's ability to contain and exhaust fumes under a set a standard conditions. A means for a comparative analysis of fume hoods. A tool for fume hood manufacturers to use in the design and research & development of fume hoods. A criteria for fume hood procurement. A method to commission and certify fume hood installations. A forensic tool to help identify issues/problems with an installed laboratory fume hood HVAC system.

Why Test Fume Hoods?

What Fume Hood Performance Testing is NOT:

As of today, there is no performance test that directly correlates the results of the fume hood performance test with the safety afforded to a fume hood operator. The variables in hood environment (including cross drafts, temperature and pressure fluctuations, activity and traffic in the lab space, hood location, system design), use practices, materials in the hood and hood loading, prevent a direct correlation.

Brief History of ASHRAE 110

Evolved from a research paper by K. J. Caplan and G. W. Knutson, "Laboratory Fume Hoods, A Performance Test", RP-70, ASHRAE Transactions, 1978. A Test Method that does not define "pass/fail" criteria First published as an ANSI Standard in 1985. Revised in 1995. "2005" version has yet to be published. SPC 110 Committee is actively involved in the laboratory industry.


ANSI/ASHRAE 110 Standard

Face Velocity Measurement Smoke Visualization Tracer Gas Containment

ASHRAE 110: Face Velocity

Face Velocity Measurement

Multiple Point Readings to Measure Average Face Velocity Measurement of Cross Drafts Verification of VAV System Operation and Response Calibration of Airflow Monitors

Velocity Probe Clamp

Microphone Stand

ASHRAE 110: Face Velocity


ASHRAE 110: Smoke Visualization

Small Volume Smoke Visualization

TiCl4 Smoke Sticks or Bottles

ASHRAE 110: Smoke Visualization

Large Volume Smoke Visualization

Theatrical Smoke Machine

ASHRAE 110: Tracer Gas Test

Tracer Gas Containment

SF6 Gas 5 minute average escape in PPM Gas analyzers measure concentration down to 0.01 PPM Three "static" tests, sash movement effect and perimeter scan

ASHRAE 110: Tracer Gas Test

ASHRAE 110: Test Types

ANSI/ASHRAE 110 Method

As Manufactured (AM) As Installed (AI) As Used (AU)

ASHRAE 110: Proposed New Version

Highlights of some proposed changes and additions: Face Velocity Measurement Shorter Mannequin Height Data Collection Additional info in explanatory Appendix A New Appendix B Diagnostic information New Appendix C Sample Test report

Other Fume Hood Performance Tests

NIH Test method US EPA Test method Person as Mannequin variation EN 14175 (European Union) MD 15128 (Canada PWGSC)

Thank you for your time...

If you have any questions, or would like to discuss this further, please do not hesitate to contact me:

Robert DeLuca, Jr. LEED Green Assoc.

Vice President [email protected]

Lab Crafters, Inc.

Ronkonkoma, NY 11779 Ph: 631.471.7755 Web:

Or Visit us here at Labs21: Booth60/61


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