<div dir="ltr"><div><div class="gmail_default" style="font-family:arial,sans-serif">Jeff,</div><div class="gmail_default" style="font-family:arial,sans-serif"><br></div><div class="gmail_default" style="font-family:arial,sans-serif">good afternoon.  Here at UofM/LNF we've had several different liquid ring systems over the years.  One was original to the lab/building (1984 vintage) and a second that was installed as part of the lab expansion back in 2007.  Both systems have been replaced (about 5 years ago) with a pair of Quincy QSV-345 vacuum pumps. We have a large holding tank (~600 gallon) in between the vacuum pumps and the delivery system.  These two Quincy pumps alternate every week, and to date, have performed flawlessly with just routine maintenance.  </div><div class="gmail_default" style="font-family:arial,sans-serif"><br></div><div class="gmail_default" style="font-family:arial,sans-serif">At one point, while we were switching from the old vacuum pumps to the new ones (about 6 weeks), we used a couple of Ebara A70's to provide the vacuum.  That was OK short term, but not something that was workable long term.</div><div class="gmail_default" style="font-family:arial,sans-serif"><br></div><div class="gmail_default" style="font-family:arial,sans-serif">Thanks,</div><br clear="all"></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><span class="gmail_default" style="font-family:arial,sans-serif">Facilities</span></div><div> </div><div>734.647.2055 Ofc<br></div></div></div><br></div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Fri, Jan 30, 2026 at 8:31 AM Jeff Salzmann <<a href="mailto:jks7@buffalo.edu">jks7@buffalo.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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Good morning!</div>
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I am looking to get some quotes collected for a house vacuum system- not for cleaning but simply for spin-coater vacuum, chucks, etc.</div>
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If you can recommend some vendors, please let me know. Thank you!!!!</div>
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Regards,</div>
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Jeff</div>
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<p style="margin:0in;font-family:Aptos,sans-serif;font-size:12pt"><span style="font-family:Calibri,sans-serif;font-size:11pt;color:black">Jeff Salzmann</span></p>
<p style="margin:0in;font-family:Aptos,sans-serif;font-size:12pt"><span style="font-family:Calibri,sans-serif;font-size:11pt;color:black">Research Assistant Professor of Electrical Engineering</span></p>
<p style="margin:0in;font-family:Aptos,sans-serif;font-size:12pt"><span style="font-family:Calibri,sans-serif;font-size:11pt;color:black">Cleanroom Manager, Shared Instrumentation Laboratories</span></p>
<p style="margin:0in;font-family:Aptos,sans-serif;font-size:12pt"><span style="font-family:Calibri,sans-serif;font-size:11pt;color:black">School of Engineering and Applied Sciences</span></p>
<p style="margin:0in;font-family:Aptos,sans-serif;font-size:12pt"><span style="font-family:Calibri,sans-serif;font-size:11pt;color:black">University at Buffalo</span></p>
<p style="margin:0in;font-family:Aptos,sans-serif;font-size:12pt"><span style="font-family:Calibri,sans-serif;font-size:11pt;color:black">114A Davis Hall</span></p>
<p style="margin:0in;font-family:Aptos,sans-serif;font-size:12pt"><span style="font-family:Calibri,sans-serif;font-size:11pt;color:black">Buffalo, NY 14260</span></p>
<p style="margin:0in;font-family:Aptos,sans-serif;font-size:12pt"><span style="font-family:Calibri,sans-serif;font-size:11pt;color:black">Tel: 716.645.2584</span></p>
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