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<p class="MsoNormal"><span style="font-size:11.0pt">Hello,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Here at Harvard, we use a scale to weigh the contents. We put a tag on the cylinder to inform users when the cylinder needs to be replaced and allow users to see the weight. They are to inform us if the cylinder
needs to be replaced. We use roughly half of the contents of the cylinder.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Dave<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Equipment Engineer<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-family:"Calibri",sans-serif;color:black">From:
</span></b><span style="font-family:"Calibri",sans-serif;color:black">"labnetwork-bounces@mtl.mit.edu" <labnetwork-bounces@mtl.mit.edu> on behalf of Travis Venables <venables@seas.upenn.edu><br>
<b>Date: </b>Tuesday, February 10, 2026 at 11:58 AM<br>
<b>To: </b>"labnetwork@mtl.mit.edu" <labnetwork@mtl.mit.edu><br>
<b>Subject: </b>[labnetwork] CPD CO2 Cylinder Usage<o:p></o:p></span></p>
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<p class="MsoNormal">Hello everyone,<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Curious how other labs are using Co2 cylinders on their CPD systems. How much CO2 do you use before replacing the cylinder? How do you monitor CO2 usage?<o:p></o:p></p>
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<p class="MsoNormal">Thanks!<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span class="gmailsignatureprefix">-- </span><o:p></o:p></p>
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<p class="MsoNormal">Travis Venables<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Lead Cleanroom Equipment Engineer<o:p></o:p></p>
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<p class="MsoNormal">Quattrone Nanofabrication Facility<o:p></o:p></p>
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<p class="MsoNormal">University of Pennsylvania<o:p></o:p></p>
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<p class="MsoNormal"><a href="https://urldefense.proofpoint.com/v2/url?u=https-3A__www.nano.upenn.edu&d=DwMFaQ&c=WO-RGvefibhHBZq3fL85hQ&r=6eLRBFWstHA_77uCRuGQiAtV9vZWeQjYS4oSMBfEHZE&m=y_-cH9vUJzwtsbLzqAig75MapiGS4wr2yTZwtYSM2qLgcm-XYvVDyDAT6rF6eIxU&s=xxQJSvjEocif3Hj8d0Iyrud-ESbKqPYHPnuuxoj9vSg&e=" target="_blank">https://www.nano.upenn.edu</a><o:p></o:p></p>
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<p class="MsoNormal">P: 215-898-1787<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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