From: "Demer, Frank R - (demer)" <demer**At_Symbol_Here**EMAIL.ARIZONA.EDU>
Subject: Re: [DCHAS-L] Cadaver lab ventilation; Dissection tables for 1) cadavers and 2) animals
Date: February 2, 2012 12:34:47 PM EST
Reply-To: DCHAS-L <DCHAS-L**At_Symbol_Here**MED.CORNELL.EDU>
Message-ID: <8C28F3F9C0708141A611C73B4D80E70E0D77E133B7**At_Symbol_Here**VA3DIAXVS461.RED001.local>


I will be speaking on the subject at the American Anatomist Association (AAA) Conference in San Diego in April 2012 (    I would be happy to send anyone my presentation after the conference.  I don’t recommend down-draft tables.  The air inlets are blocked by the donor and the bag or plastic that covers them.     Below is a summary of my recommendations:

       Reduce ceiling height, if possible -  9 ft (2.7 m)

       Flanged, side slot table design with appropriately-sized plenum

       100% exhaust with 5 – 10 % less make-up air to keep room negative in pressure

       700 – 1600 cfm (0.33 – 0.76 m3/s) - “On” mode

       300 - 600 cfm (0.14 – 0.28 m3/s), maybe less - “Off” mode, specimen sealed in disaster bag when not in use

       Make-up air through large laminar flow diffuser directly above table - >25 ft2 (>2.32 m2)

       1000 – 2000 fpm duct velocity (8” – 16” round exhaust duct) with < 2’ flex duct and aerodynamic design features throughout, if possible

       Consider ergonomics and economics


Feel free to call me if you would like to discuss the issue.  AAA also has a gross anatomy lab design page on their website, which is useful:


Best Regards,


Frank R. Demer, MS, CIH, CSP

Health Safety Officer

Industrial Hygiene and Safety

University of Arizona

Department of Risk Management Services


Phone:  520.621.3585

Fax:  520.621.3706

Email:  demer**At_Symbol_Here**

Mailing Address:  P.O. Box 210300, Tucson, AZ  85721-0300

Street Address:  220 W. 6th St., Tucson, AZ 85701 (2nd floor, East Bldg.)

Web Address:


From: DCHAS-L Discussion List [mailto:dchas-l**At_Symbol_Here**MED.CORNELL.EDU] On Behalf Of Ferm, Barret
Sent: Thursday, February 02, 2012 8:32 AM
Subject: [DCHAS-L] Cadaver lab ventilation; Dissection tables for 1) cadavers and 2) animals


I am seeking information regarding ventilation methods for a cadaver laboratory.  In particular, we want to know the best way to achieve low formaldehyde levels, closer to the NIOSH recommended level of 0.016 ppm-TWA.  Also, any specific precedence or references you can share to help me inform/educate the decision makers why it is (or is not) in the institution's best interest to go by the NIOSH  values rather than the OSHA values (0.75 ppm TWA for formaldehyde).
All this is in the context of a renovation and expansion.  Any information on this would be greatly appreciated, including vendors for down-draft tables or other engineering control techniology (reviews, good+bad).   Thanks!

Barry Ferm, CHO & Lab Coordinator, St. Ambrose University, Davenport Iowa, fermbarreta**At_Symbol_Here**

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