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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>My initial concern was with organic compounds (TOC) leaching from
the PVC pipe and cement, but it appears this new material has low extractables.
The other concern I have is with the smoothness of the pipe joints. Any crevices
or beads in the joint would invite bacteria growth.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>I did not dig too deeply into the specifications, but the
following link from one supplier may be of some use:<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><a href="http://www.harvellxt.com/">http://www.harvellxt.com/</a><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>It appears there is training required to acquire the skill set needed
to properly use the system, not unlike with PVDF fusion. <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>I’d also be curious to see the cost difference between the two
systems.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-family:"Calibri","sans-serif";color:#1F497D'>Jeff
Kuhn<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Facility Engineer<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Birck Nanotechnology Center<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Purdue University<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>1205 W. State St.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>West Lafayette, IN 47907<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Ph: (765) 496-8329<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Fax: (765) 496-2018<o:p></o:p></span></p>
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color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal style='margin-left:.5in'><b><span style='font-size:10.0pt;
font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;
font-family:"Tahoma","sans-serif"'> labnetwork-bounces@mtl.mit.edu
[mailto:labnetwork-bounces@mtl.mit.edu] <b>On Behalf Of </b>Abbie Gregg<br>
<b>Sent:</b> Thursday, September 30, 2010 2:45 PM<br>
<b>To:</b> Volkan Ozguz; labnetwork@mtl.mit.edu<br>
<b>Cc:</b> Ciel Villawatkins; Mark Winter<br>
<b>Subject:</b> Re: [labnetwork] PVC piping<o:p></o:p></span></p>
</div>
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<p class=MsoNormal style='margin-left:.5in'><o:p> </o:p></p>
<p class=MsoNormal style='margin-left:.5in'><span style='font-family:"Arial","sans-serif";
color:#1F497D'>We would be very interested in results on this. We have been
using PVDF on the supply side and Polypro on the return side for most Nanolab
construction in the last 10 years. <o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.5in'><span style='font-family:"Arial","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal style='margin-left:.5in'><span style='font-size:11.0pt;
font-family:"Arial","sans-serif";color:#1F497D'>Abbie Gregg</span><span
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<p class=MsoNormal style='margin-left:.5in'><span style='font-size:11.0pt;
font-family:"Arial","sans-serif";color:#1F497D'>Abbie Gregg, Inc.</span><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p>
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<p class=MsoNormal style='margin-left:.5in'><b><span style='font-size:10.0pt;
font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;
font-family:"Tahoma","sans-serif"'> labnetwork-bounces@mtl.mit.edu [mailto:labnetwork-bounces@mtl.mit.edu]
<b>On Behalf Of </b>Volkan Ozguz<br>
<b>Sent:</b> Thursday, September 30, 2010 1:37 AM<br>
<b>To:</b> labnetwork@mtl.mit.edu<br>
<b>Subject:</b> [labnetwork] PVC piping<o:p></o:p></span></p>
</div>
<p class=MsoNormal style='margin-left:.5in'><o:p> </o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:0in;margin-right:0in;margin-bottom:
12.0pt;margin-left:.5in'> Dear Colleagues,<br>
There are some new classes of PVC piping (and related joining techniques) marketed
for use in ultra pure water applications including 18 MOhm levels. Are there
any users in our network who used similar piping materials? How do they compare
to PVDF or PP piping materials? What are your assements about installation,
service and long term reliability? <br>
Thanks for your help,<br>
Volkan<br>
<br clear=all>
<br>
-- <br>
Volkan Özgüz<br>
Sabancı University<br>
Nanotechnology Research and Application Center <br>
Orhanlı, Tuzla, İstanbul 34956<br>
Office: 0 216 483 9880<br>
Fax: 0 216 483 9550<br>
Email: <a href="mailto:vozguz@sabanciuniv.edu" target="_blank">vozguz@sabanciuniv.edu</a><o:p></o:p></p>
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