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<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>
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<p class="MsoPlainText">-----Original Message-----<br>
From: labnetwork-bounces@mtl.mit.edu [mailto:labnetwork-bounces@mtl.mit.edu] 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</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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