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<p class="MsoNormal"><span lang="EN-US" style="font-family:initial">Hello Hadi,<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-family:initial"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-family:initial">We have the exact same problem.<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-family:initial">You could try to contact Sensorix in Germany who claims to have drop-in replacements for MST:
</span><span lang="EN-US"><a href="https://www.sensorix.com/">https://www.sensorix.com/</a><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">A word of caution: <o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo1"><![if !supportLists]><span lang="EN-US"><span style="mso-list:Ignore">1)<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-US" style="font-family:initial">We haven’t tried these sensors ourselves, so we don’t know how they work.<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo1"><![if !supportLists]><span lang="EN-US"><span style="mso-list:Ignore">2)<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-US" style="font-family:initial">If you use a third-party vendor, there is a potential risk that the gas detection system won’t work properly.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:initial"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:initial">Even though Honeywell recommends changing the MST gas sensors every 6 months, they might possibly function longer. According to a 6 year old data sheet for chlorine they guarantee < 10 % decay/6
months, but the sensor life time is specified to 3 years. <o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-family:initial"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:initial">Best regards,
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:initial">Leif<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Slate Pro",serif;color:#0073BC"> Original Message </span><o:p></o:p></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma",sans-serif;display:none">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma",sans-serif;display:none"> hadi_esmaeilsabzali@sfu.ca<o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma",sans-serif;display:none">Sent:</span></b><span style="font-size:10.0pt;font-family:"Tahoma",sans-serif;display:none"> 14 June 2022 22:59<o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma",sans-serif;display:none">To:</span></b><span style="font-size:10.0pt;font-family:"Tahoma",sans-serif;display:none"> labnetwork@mtl.mit.edu<o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma",sans-serif;display:none">Subject:</span></b><span style="font-size:10.0pt;font-family:"Tahoma",sans-serif;display:none"> [labnetwork] Honeywell MST Sensors<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt">Dear Colleagues,</span><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">Another supply chain story here. Honeywell has informed us that the MST sensors that we had ordered in April 2021 and were supposed to be delivered earlier in March of this year won't be ready
until early 2023. </span><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:black">All our gas sensors (NH3, Cl2, SiH4, HCl) are due for replacement, and we are currently concerned about the risk of running possibly expired sensors.</span><span lang="EN-US" style="font-size:11.0pt"> Anyone
facing the same issue? Are there other reliable suppliers we can purchase these sensors from? Any advice is
</span><span lang="EN-US">appreciated!</span><span lang="EN-US" style="font-size:11.0pt"> </span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt">Hadi</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#212121">Hadi Esmaeilsabzali, PhD</span></b><span lang="EN-US" style="font-size:11.5pt;font-family:"Segoe UI",sans-serif;color:#212121"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#212121">Nanofabrication Group Manager, 4D LABS</span><span lang="EN-US" style="color:#212121"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#212121">Simon Fraser University</span><span lang="EN-US" style="color:#212121"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#212121">8888 University Dr., Burnaby, B.C. V5A 1S6</span><span lang="EN-US" style="color:#212121"><br>
</span><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#212121">T:
</span><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#212121"><a href="tel:7787823790"><span lang="EN-US">778.782.3790</span></a></span><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#212121"> | F:
</span><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#212121"><a href="tel:7787823765"><span lang="EN-US">778.782.3765</span></a></span><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#212121"> | </span><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#212121"><a href="http://www.4dlabs.ca/" id="LPNoLP"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif">www.4dlabs.ca</span></a></span><span lang="EN-US" style="color:#212121"><br>
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