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Previous by Date: Subject: Re: Please Help A New Fellow Scientist Date: Thu, 28 May 2009 11:21:13 -0400 Author: List Moderator |
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Date: Thu, 28 May 2009 21:26:14 -0400
Reply-To: BR <barryrayfield**At_Symbol_Here**NC.RR.COM>
Sender: DCHAS-L Discussion List <DCHAS-L**At_Symbol_Here**LIST.UVM.EDU>
From: BR <barryrayfield**At_Symbol_Here**NC.RR.COM>
Subject: Re: Vented Caps
Comments: To: "Larry D. McLouth"
In-Reply-To: <4A1DC59C.8000001**At_Symbol_Here**lbl.gov>
Integris also makes similar venting drum bungs and tote caps. For example, they are a must when shipping >10% hydrogen peroxide. DOT requires these be installed for any material that can build up enough pressure within a container, under normal handling conditions, to cause the container to over-pressure and fail. Barry Larry D. McLouth wrote: > Has anyone ever used vented caps such as those produced by Performance > Systematix Inc? These have liners made of expanded PTFE that are > liquid tight but allow gases and vapors to permeate, thus reducing > pressure build up. They are normally used to replace standard chemical > container caps for chemicals that offgas. > > If you've used them what is your opinion of them? > > Do you know of other sources of vented caps (i.e., other than > Performance Systematix Inc)? > > Regards > > Larry > >
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