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From: Dr Bob Haugen <000022f9a6bae5ae-dmarc-request**At_Symbol_Here**LISTS.PRINCETON.EDU>
Subject: Re: [DCHAS-L] Fume Hood Recertification
Date: Oct 31, 2025 14:55 UTC
Reply-To: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**Princeton.EDU>
Message-ID: <BN8PR07MB63403AF689FE29A9D83CD751D9F8A**At_Symbol_Here**BN8PR07MB6340.namprd07.prod.outlook.com>
In-Reply-To: <CANWxjW3_PFtYdgVzVR50gsgMyerUyDhuDrdGECUyGv95zww13g**At_Symbol_Here**mail.gmail.com>
Hi Filberto Palacios!
Many of these questions are answered in ANSI / ASHRAE 110-2016, which is being updated to 2026 version soon. Dimensional measurements are unchanged, but there are great illustrations in the standard
itself in Sections 4.7 for the containment test, and 6, for face velocity measurements. You should check Princeton’s safety files as it is likely they have this standard electronically filed somewhere.
If you need additional help, just contact me at my email address listed below.
Dr. Bob Haugen
Coordinator of Containment Research & Fume Hood Product Manager
Flow Sciences, Inc.
drbob**At_Symbol_Here**flowsciences.com
910 332 4878
www.flowsciences.com
Linkedin – Facebook
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From: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**Princeton.EDU>
On Behalf Of Filiberto Palacios
Sent: Thursday, October 30, 2025 5:27 PM
To: DCHAS-L**At_Symbol_Here**Princeton.EDU
Subject: [DCHAS-L] Fume Hood Recertification
Good Afternoon All,
I am currently working on a plan to recertify fume hoods in-house and was wondering if other institutions on this Listserv would be willing to share the following: (1) how many total air velocity measurements are averaged with the anemometer
of choice? Is there a minimum your institution uses? 2) is there a depth into the fume hood which should be met for all measurements or would it be sufficient to take the measurements near the face of the fume hood? (3) what other measurements or qualitative
testing is done to complete the recertification process? (I’ve seen that a smoke pencil is used to visually test the functionality of the fume hood). Please advise and thank you!
Best,
Filiberto Palacios, MPH, CPH | Laboratory
and Research Safety Officer
Division of Academic Affairs, Department of Biology and Chemistry, Azusa Pacific University
Azusa Pacific University PO Box 7000, Azusa, CA 91702-7000
(626) 815-6072 Ext. 6072 |
apu.edu
“Do not conform to the pattern of this world, but be transformed by the renewing of your mind. Then you will be able to test and approve what God’s will is—his good, pleasing, and perfect will.” Romans 12:2
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