<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto">Check with Advanced Specialty Gases (Reno,NV), can typically have this and other HC gases delivered in 2-3 Days. Prices are competitive.<div><br></div><div><a href="https://www.advancedspecialtygases.com/#footer">https://www.advancedspecialtygases.com/#footer</a></div><div><br></div><div>Corey</div><div><br></div><div>“<i>One Test is worth an infinite number of expert opinions”</i></div><div><br><br><div dir="ltr"><blockquote type="cite">On Nov 25, 2020, at 4:47 PM, Dennis Schweiger <schweig@umich.edu> wrote:<br><br></blockquote></div><blockquote type="cite"><div dir="ltr"><div dir="ltr"><div class="gmail_default" style="font-family:arial,sans-serif">Guy,</div><div class="gmail_default" style="font-family:arial,sans-serif"><br></div><div class="gmail_default" style="font-family:arial,sans-serif">We used to purchase C4F8 from Concord Specialty Gases (<span style="color:rgb(45,45,45);font-family:"Open Sans",Arial,sans-serif">1-800-818-5109). However back in 2013 we switched and now use our local specialty gas vendor (Cryogenic Gases </span><span style="font-family:Arial,Helvetica,sans-serif">(313)835-5513) </span><span style="color:rgb(45,45,45);font-family:"Open Sans",Arial,sans-serif">for sourcing this material as it was less hassle to return the empties. I am not sure who they're using as the supplier, but will check with them.</span></div><div class="gmail_default" style="font-family:arial,sans-serif"><span style="color:rgb(45,45,45);font-family:"Open Sans",Arial,sans-serif"><br></span></div><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div>Dennis<span class="gmail_default" style="font-family:arial,sans-serif"> Schweiger</span></div><div><span class="gmail_default" style="font-family:arial,sans-serif">University of Michigan/LNF</span></div><div> </div><div>734.647.2055 Ofc</div><div> </div><div>"People can be divided into 3 groups - those that make things happen, those that watch things happen, and those that wonder what happened." Within which group do you belong?</div></div></div><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Nov 25, 2020 at 8:30 AM DeRose, Guy A. <<a href="mailto:derose@caltech.edu">derose@caltech.edu</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
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<p class="MsoNormal"><span style="font-size:11pt">Hello community,</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11pt"> </span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11pt">From the time we re-opened our cleanroom back in June through now, we have had challenges sourcing C4F8 (Halocarbon C318) gas for our plasma etch tools. We have tried three different vendors, and the lead
times have been unusually long. Are there any gas suppliers that any of you have had good luck sourcing this gas within a couple of weeks? I have been waiting for one cylinder to be shipped since October 5 and am still waiting. We have been trying to get
enough to have a spare on hand, but sourcing has been an issue to the point of running empty while waiting for a replacement.</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11pt"> </span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11pt">Thanks,</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11pt">Guy</span><u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:11pt;color:black"> </span><u></u><u></u></p>
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<p class="MsoNormal"><span style="font-size:11pt;color:black">Guy DeRose, PhD, Member of the Professional Staff</span><u></u><u></u></p>
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<p class="MsoNormal"><span style="font-size:11pt;color:black">Associate Director of Technical Operations, Kavli Nanoscience Institute</span><u></u><u></u></p>
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<p class="MsoNormal"><span style="font-size:11pt;color:black">California Institute of Technology, Pasadena, CA USA</span><u></u><u></u></p>
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<p class="MsoNormal"><span style="font-size:11pt;color:black">(O) 1-626-395-3423 (M) 1-626-676-8529</span><u></u><u></u></p>
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<p class="MsoNormal"><span style="font-size:11pt;color:black"><a href="http://kni.caltech.edu" target="_blank">http://kni.caltech.edu</a></span><u></u><u></u></p>
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