Date: Fri, 3 Jun 2011 21:12:24 -0400
Reply-To: DCHAS-L Discussion List <DCHAS-L**At_Symbol_Here**LIST.UVM.EDU>
Sender: DCHAS-L Discussion List <DCHAS-L**At_Symbol_Here**LIST.UVM.EDU>
From: Ray Mainer <rmainer**At_Symbol_Here**GMAVT.NET>
Subject: Centrifuges

Some plastics (e.g. polycarbonates) suffer from environmental stress 
cracking.  That means that the slightest amount of most solvents 
(excluding water) will cause the polycarbonate to disintegrate.  That 
may be the reason.

Ray Mainer

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