Date: Fri, 22 Oct 2010 16:21:44 -0400
Reply-To: DCHAS-L Discussion List <DCHAS-L**At_Symbol_Here**LIST.UVM.EDU>
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From: ILPI <info**At_Symbol_Here**ILPI.COM>
Subject: Re: attaching tubing to glass
In-Reply-To: <OFBDFBF2EE.F45DCF37-ON852577C4.006CF170-852577C4.006D7063**At_Symbol_Here**hc-sc.gc.ca>

Great idea.  And when purchasing new condensers etc. consider purchasing ones with removable hose connections like these GL-threaded ones.

http://www.safetyemp orium.com/?CG-1206-HC-05

Usual disclaimer - my web site.

If you have a resident glassblower, he or she can retrofit existing glassware with GL threads quite cost-effectively.   If you don't have a glassblower, but do have a large collection of condensers you can outsource it and it would cost less than buying all new glassware.   It would be a significant cost per unit, but  then again it's probably less expensive than paying for one or two severed tendons...

Rob Toreki

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On Oct 22, 2010, at 3:55 PM, Pierre Chantal wrote:


Onw way of doing it wich allow easy connection and removal is by using a compression fitting such as "Swagelok" union or reducing union between the two tubes (as long as the two tubes have an external diameter that correspond to a tube diameter of the fitting). You can use an "insert" on the plastic tube to prevent collapsing of the tube by the compression fitting and use an O-ring with the back ferrule installed backward on the glass tube. You can also select the material of the fitting that is compatible with your chemicals. I have used similar set-up at many occasion and never have any problem.

Hope it helps

Pierre
 


"House, Katherine C." <HouseKC**At_Symbol_Here**CORMETECH.COM>
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2010-10-22 03:20 PM
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[DCHAS-L] attaching tubing to glass





A step in one of the analyses we do in our lab involves connecting Tygon tubing to the end of a glass tube.  We have Kevlar gloves for this purpose, but I=92ve heard of an additional safety device that can also be used for this purpose=97though I can=92t find one.  I=92ve done the obligatory Google search with no luck.  Has anyone heard of or used anything that reduces the risk of getting cut while attaching hose/tubing to glass tubes or rods?
Many thanks; I hope everyone has a great weekend!
 
Katherine C. House, CCHO
Laboratory Coordinator
Chemical Hygiene Officer
Cormetech, Inc.
5000 International Drive
Durham, NC 27712
919.620.3044 (office)
919.815.2024 (mobile)
 
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