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Subject: Re: Please Help A New Fellow Scientist
Date: Wed, 27 May 2009 16:32:58 -0500
Author: Steven Nelson 		Next by Date:
Subject: Re: Please Help A New Fellow Scientist
Date: Thu, 28 May 2009 08:57:05 -0400
Author: List Moderator


Date: Wed, 27 May 2009 15:58:36 -0700
Reply-To: "Larry D. McLouth" <LDMclouth**At_Symbol_Here**LBL.GOV>
Sender: DCHAS-L Discussion List <DCHAS-L**At_Symbol_Here**LIST.UVM.EDU>
From: "Larry D. McLouth" <LDMclouth**At_Symbol_Here**LBL.GOV>
Subject: Vented Caps

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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