From: Ellen M Sweet <ems325**At_Symbol_Here**CORNELL.EDU>
Subject: Re: [DCHAS-L] Negative Pressure Laboratory Regulation or Standard
Date: August 6, 2012 10:44:22 AM EDT
Reply-To: DCHAS-L <DCHAS-L**At_Symbol_Here**MED.CORNELL.EDU>
Message-ID: <7D49DDEA5C85D74DB7983AAC7DC05E9F2175BC0C**At_Symbol_Here**>

Check the ANSI Z9.5,ch 5.1.1 (Differential Pressure and Airflow Between Rooms).

Also in the OSHA Lab Standard (29 CFR 1910.1450 Subpart Z Appendix A)- “direct air flow into the laboratory from non-laboratory areas and out to the exterior of the building.” Keep in mind these are non-mandatory and the word “should” is used.


Ellen Sweet

Cornell University Environmental Health and Safety

office: (607) 254-8644

cell: (315) 730-8896




From: DCHAS-L Discussion List [mailto:dchas-l**At_Symbol_Here**MED.CORNELL.EDU] On Behalf Of Paul Weller
Sent: Monday, August 06, 2012 9:19 AM
Subject: [DCHAS-L] Negative Pressure Laboratory Regulation or Standard



Does anyone know if there is a regulation or standard which requires labs to have a negative pressure relative to hallways?  Thanks.


Paul Weller


Paul Weller

Science Laboratory Manager-Chemistry
Elon University

2625 Campus Box

Elon, NC 27244

Phone  336.278..6225




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