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<p class="MsoNormal"><span style="color:#1F497D">It depends on the cleanroom and whether the effects of utility grade N2 will produce an issue. In a production Fab absolutely, but not having seen Iulian's layout and what he is trying to do, it's hard to make
that call. How many guns will there be? Is there UHP N2 close or will they need to run additional lines? Does the process care? Does the area care? Just questions he needs to ask before he defaults to spending extra money that he might not need to.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Enjoy the weekend!<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Tom<o:p></o:p></span></p>
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<p class="MsoNormal"><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""> Keith Barnes [mailto:kbarnes@semitorrinc.com]
<br>
<b>Sent:</b> Friday, January 11, 2013 6:01 PM<br>
<b>To:</b> Tom Britton; Iulian Codreanu; Fab Network<br>
<b>Subject:</b> RE: [labnetwork] N2 grade for blow guns<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-size:12.0pt;color:#1F497D">I would think that you wouldn’t want utility N2 in your clean room at all! The cost of using a purifier to clean up low flows of N2 would not be prohibitive.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Arial","sans-serif";color:#1F497D">Thank you,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial","sans-serif";color:#0F243E">Keith F. Barnes<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial","sans-serif";color:#1F497D">Sales Representative<o:p></o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:24.0pt;font-family:"Rockwell","serif";color:#032248">SEMITORR<o:p></o:p></span></b></p>
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#F2BD05">sales distribution service<o:p></o:p></span></b></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#0F243E">6336 Patterson Pass Road Suite H<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#0F243E">Livermore, CA 94550<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">tel: 925.667.3607<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">cell: 925.337.2221<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">email:
<a href="mailto:kbarnes@semitorrinc.com">kbarnes@semitorrinc.com</a> <o:p></o:p></span></p>
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<a href="www.semitorrinc.com">www.semitorrinc.com</a><o:p></o:p></span></p>
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<p class="MsoNormal"><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"">
<a href="mailto:labnetwork-bounces@mtl.mit.edu">labnetwork-bounces@mtl.mit.edu</a> [<a href="mailto:labnetwork-bounces@mtl.mit.edu">mailto:labnetwork-bounces@mtl.mit.edu</a>]
<b>On Behalf Of </b>Tom Britton<br>
<b>Sent:</b> Friday, January 11, 2013 12:56 PM<br>
<b>To:</b> Iulian Codreanu; Fab Network<br>
<b>Subject:</b> Re: [labnetwork] N2 grade for blow guns<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoPlainText">Hi Iulian,<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">Back in my component distribution days I was the Entegris (Fluoroware at the time) rep and we hardly ever had Fabs use utility N2 in blow guns inside the cleanroom due to the possibility of particulate being blown into the fab air. Whether
or not it would have mattered in a laminar flow environment is debatable, but this is what the Fabs did. This being said, you're not in a production environment, so the question becomes two-fold. First, is potentially particulate laden air, or the moisture/molecular
contamination in utility N2 going to cause any issue with other devices/wafers in your clean room, and second, is what you are going to blow off with the guns sensitive to particles, moisture or molecular contamination. If the answer to these questions is
no, I would recommend utility N2 for cost purposes.<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">Good luck!<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Tom Britton<o:p></o:p></p>
<p class="MsoNormal">Sales Manager<o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:14.0pt;font-family:"Georgia","serif"">Critical Systems, Inc.<o:p></o:p></span></p>
<p class="MsoNormal">7000 W. Victory Road<o:p></o:p></p>
<p class="MsoNormal">Boise, ID 83709<o:p></o:p></p>
<p class="MsoNormal">Direct: 208-890-1417<o:p></o:p></p>
<p class="MsoNormal">Shop: 877-572-5515<o:p></o:p></p>
<p class="MsoNormal"><a href="http://www.criticalsystemsinc.com">www.criticalsystemsinc.com</a><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><i>"World Leader in UHP Reconditioned Gas<o:p></o:p></i></p>
<p class="MsoNormal"><i> Delivery & Abatement Technologies"<o:p></o:p></i></p>
<p class="MsoNormal"><span style="font-size:8.0pt"><o:p> </o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
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<p class="MsoPlainText">-----Original Message-----<br>
From: <a href="mailto:labnetwork-bounces@mtl.mit.edu">labnetwork-bounces@mtl.mit.edu</a> [<a href="mailto:labnetwork-bounces@mtl.mit.edu">mailto:labnetwork-bounces@mtl.mit.edu</a>] On Behalf Of Iulian Codreanu<br>
Sent: Friday, January 11, 2013 9:41 AM<br>
To: Fab Network<br>
Subject: [labnetwork] N2 grade for blow guns<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">Dear Colleagues,<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">Would it be overkill or a good idea to supply high purity nitrogen (instead of utility nitrogen) to the blow guns located in cleanroom fume hoods?<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">Thank you for your help.<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">Iulian<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">--<o:p></o:p></p>
<p class="MsoPlainText">iulian Codreanu, Ph.D.<o:p></o:p></p>
<p class="MsoPlainText">Director of Operations, UD Nanofab<o:p></o:p></p>
<p class="MsoPlainText">149 Evans Hall<o:p></o:p></p>
<p class="MsoPlainText">Newark, DE 19716<o:p></o:p></p>
<p class="MsoPlainText">302-831-2784<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">_______________________________________________<o:p></o:p></p>
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