<div dir="ltr"><div class="gmail_default" style="font-family:arial,sans-serif">John,</div><div class="gmail_default" style="font-family:arial,sans-serif"><br></div><div class="gmail_default" style="font-family:arial,sans-serif">Good morning. I agree with Tom, wherever we've tried to use a CGA for a HPM we've run into long term issues. That's why all of our HPM gases (except for Hydrogen, Methane, and Acetylene) are now DISS cylinder connections. They just work, each and every time.</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><div class="gmail_default" style="font-family:arial,sans-serif"><br></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 Manager</span></div><div> </div><div>734.647.2055 Ofc<br></div></div></div><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Jun 7, 2021 at 8:03 PM Tom Britton <<a href="mailto:tbritton@criticalsystemsinc.com">tbritton@criticalsystemsinc.com</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">
<div lang="EN-US" style="overflow-wrap: break-word;">
<div class="gmail-m_-3323014477541601415WordSection1">
<p class="MsoNormal"><span style="font-family:"Century Gothic",sans-serif;color:rgb(50,62,79)">Hi John,<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family:"Century Gothic",sans-serif;color:rgb(50,62,79)"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-family:"Century Gothic",sans-serif;color:rgb(50,62,79)">Looks like the professor wants to upgrade to a high purity cylinder connection. For this type of gas (corrosives) I would strongly advise not using the adapter, but rather
making a new pigtail with just the DISS connection, and avoid elastomeric seals totally. HBr loves water and really makes a mess if it sees any, even if it’s just trace amounts.
<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family:"Century Gothic",sans-serif;color:rgb(50,62,79)"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-family:"Century Gothic",sans-serif;color:rgb(50,62,79)">We see many people replacing their regulators and/or gas panels due to the interaction of moisture with HBr, either during cylinder changes, or through the use of low purity
purge gas. For our gas systems, we use all metal seals, DISS cylinder connections, and if the customer cannot absolutely guarantee 5-9s on their purge gas, a purge gas purifier. Set up this way, the interior of the process line, the panel, regulator, etc.
will last a long time in service.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family:"Century Gothic",sans-serif;color:rgb(50,62,79)"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-family:"Century Gothic",sans-serif;color:rgb(50,62,79)">If I can help in any way, just ask.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family:"Century Gothic",sans-serif;color:rgb(50,62,79)"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-family:"Century Gothic",sans-serif;color:rgb(50,62,79)">All the best,<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family:"Century Gothic",sans-serif;color:rgb(50,62,79)"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-family:"Century Gothic",sans-serif;color:rgb(50,62,79)">Tom
<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family:"Century Gothic",sans-serif;color:rgb(50,62,79)"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-family:"Century Gothic",sans-serif;color:rgb(50,62,79)">Tom Britton<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family:"Century Gothic",sans-serif;color:rgb(50,62,79)">Director of Sales<u></u><u></u></span></p>
<p class="MsoNormal"><i><span style="font-size:14pt;font-family:"Century Gothic",sans-serif;color:rgb(50,62,79)">Critical Systems, Inc.<u></u><u></u></span></i></p>
<p class="MsoNormal"><span style="font-family:"Century Gothic",sans-serif;color:rgb(50,62,79)">Direct: 208.890.1417<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family:"Century Gothic",sans-serif;color:rgb(50,62,79)">Office: 877.572.5515<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family:"Century Gothic",sans-serif;color:rgb(50,62,79)">Skype: tombrittoncsi<u></u><u></u></span></p>
<p class="MsoNormal"><i><span style="font-size:12pt;font-family:"Arial Narrow",sans-serif;color:rgb(50,62,79)"><a href="http://www.criticalsystemsinc.com/" target="_blank"><span style="color:rgb(5,99,193)">www.CriticalSystemsInc.com</span></a><u></u><u></u></span></i></p>
<p class="MsoNormal"><i><span style="font-size:4pt;font-family:"Arial Narrow",sans-serif;color:rgb(50,62,79)"><u></u> <u></u></span></i></p>
<p class="MsoNormal"><span style="color:rgb(31,73,125)"><img border="0" width="196" height="38" style="width: 2.0416in; height: 0.3958in;" id="gmail-m_-3323014477541601415Picture_x0020_35" src="cid:179eb0967b74cff311" alt="logo for email signature png"><u></u><u></u></span></p>
<p class="MsoNormal"><b><span style="font-size:4pt;font-family:"Century Gothic",sans-serif;color:rgb(0,32,96)"><u></u> <u></u></span></b></p>
<p class="MsoNormal"><b><i><span style="font-family:"Century Gothic",sans-serif;color:rgb(0,32,96)">Note: 7 days per week Technical Support
<u></u><u></u></span></i></b></p>
<p class="MsoNormal"><i><span style="font-family:"Century Gothic",sans-serif;color:rgb(0,32,96)">Phone: 1-888-218-6308<u></u><u></u></span></i></p>
<p class="MsoNormal"><i><span style="font-family:"Century Gothic",sans-serif;color:rgb(0,32,96)">Email:
<a href="mailto:Fieldservices@criticalsystemsinc.com" target="_blank"><span style="color:rgb(5,99,193)">Fieldservices@criticalsystemsinc.com</span></a></span></i><span style="color:rgb(50,62,79)"><u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-family:"Century Gothic",sans-serif;color:rgb(50,62,79)"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-family:"Century Gothic",sans-serif;color:rgb(50,62,79)"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-family:"Century Gothic",sans-serif;color:rgb(50,62,79)"><u></u> <u></u></span></p>
<div>
<div style="border-right:none;border-bottom:none;border-left:none;border-top:1pt solid rgb(225,225,225);padding:3pt 0in 0in">
<p class="MsoNormal"><b>From:</b> labnetwork <<a href="mailto:labnetwork-bounces@mtl.mit.edu" target="_blank">labnetwork-bounces@mtl.mit.edu</a>> <b>
On Behalf Of </b>John Nicholson<br>
<b>Sent:</b> Monday, June 7, 2021 11:33 AM<br>
<b>To:</b> Labnetwork <<a href="mailto:labnetwork@mtl.mit.edu" target="_blank">labnetwork@mtl.mit.edu</a>><br>
<b>Subject:</b> [labnetwork] Hydrogen Bromide Seal Compatibility<u></u><u></u></p>
</div>
</div>
<p class="MsoNormal"><u></u> <u></u></p>
<div id="gmail-m_-3323014477541601415eyJ0eXBlIjoic2lnaHRzLWJhbm5lciIsIm5vcm10ZXh0IjoiaXJvbnNjYWxlc2NvdWxkbnRyZWNvZ25pemV0aGlzZW1haWxhc3RoaXNpc3RoZWZpcnN0dGltZXlvdXJlY2VpdmVkYW5lbWFpbGZyb210aGlzc2VuZGVydGhlam9obm5pY2hvbHNvbmdtYWlsY29tIn0:1lqLgg:GKJFmuCsP2NNf4a9whSuA6IH23s">
<div>
<table border="0" cellspacing="0" cellpadding="0" width="100%" style="width:100%;background:gainsboro">
<tbody>
<tr>
<td valign="top" style="padding:3.75pt">
<p class="MsoNormal"><span style="font-family:"Open Sans",sans-serif;color:black"><img border="0" width="38" height="36" style="width: 0.3958in; height: 0.375in;" id="gmail-m_-3323014477541601415_x0000_i1025" src="https://s3.amazonaws.com/staticmediafiles/media/sights/iron-icon-color.png"></span><span style="font-family:"Open Sans",sans-serif"><u></u><u></u></span></p>
</td>
<td style="padding:3.75pt">
<p class="MsoNormal"><b><span style="font-size:9pt;font-family:"Open Sans",sans-serif;color:black">IRONSCALES couldn't recognize this email as this is the first time you received an email from this sender
<a href="mailto:thejohnnicholson@gmail.com" target="_blank">thejohnnicholson@gmail.com</a><u></u><u></u></span></b></p>
</td>
</tr>
</tbody>
</table>
</div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div style="border:1pt solid rgb(255,202,202);padding:12pt;background:rgb(255,202,202)">
<p style="background:rgb(255,202,202);border:none;padding:0in"><b><span style="font-size:12pt;color:black">[EXTERNAL EMAIL]</span></b><span style="color:black">
</span><span style="font-size:10pt;color:black">This message originated outside of your organization. Remember to always use caution when opening attachments or clicking on links.</span><u></u><u></u></p>
</div>
<div>
<div>
<div>
<p class="MsoNormal">I'm retiring this month after minding the UMass/Amherst clean rooms solo since 2008 and have a few last minute equipment configuration issues to complete.<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal">HBr has been added to our RIE system and the line fitting is a CGA 330 while the tank ordered by a professor is a 634 fitting (nickel seals). I have a 634 to 330 tank adapter but am unsure whether the Teflon seals used with the 330 end
would be compatible with HBr. Any advice would be appreciated.<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal">Best regards and thanks for the assistance over the years,<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:10pt;font-family:"Courier New";color:rgb(33,33,33);background:rgb(247,247,247)">-- </span><span style="font-size:10pt;font-family:"Courier New";color:rgb(33,33,33)"><br>
<span style="background:rgb(247,247,247)">John Nicholson</span><br>
<span style="background:rgb(247,247,247)">Nanofabrication Laboratory Manager</span><br>
<span style="background:rgb(247,247,247)">Silvio O. Conte Center for Polymer Research, Rm. B111</span><br>
<span style="background:rgb(247,247,247)">University of Massachusetts Amherst</span><br>
<span style="background:rgb(247,247,247)">120 Governor's Drive</span><br>
<span style="background:rgb(247,247,247)">Amherst,MA 01003-9305</span><br>
<span style="background:rgb(247,247,247)">Phone: 413-545-2772</span></span> <u></u><u></u></p>
</div>
</div>
</div>
</div>
This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager. This message contains confidential
information and is intended only for the individual named. If you are not the named addressee you should not disseminate, distribute or copy this e-mail. Please notify the sender immediately by e-mail if you have received this e-mail by mistake and delete
this e-mail from your system. If you are not the intended recipient you are notified that disclosing, copying, distributing or taking any action in reliance on the contents of this information is strictly prohibited.'. If the disclaimer can't be applied, attach
the message to a new disclaimer message.
</div>
_______________________________________________<br>
labnetwork mailing list<br>
<a href="mailto:labnetwork@mtl.mit.edu" target="_blank">labnetwork@mtl.mit.edu</a><br>
<a href="https://mtl.mit.edu/mailman/listinfo.cgi/labnetwork" rel="noreferrer" target="_blank">https://mtl.mit.edu/mailman/listinfo.cgi/labnetwork</a><br>
</blockquote></div>