<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto">We have got the “extension of expiration” notices from manufacturer, and have done internal tests showing these PR’s work well beyond the expiration dates (when bulk is stored in refrigerator) - they appear to be good at least 1 year beyond expiration. We tested UV6, UVN30, and one of the SPR’s if I remember correctly.<div><br><div dir="ltr"><div><span class="Apple-style-span" style="-webkit-tap-highlight-color: rgba(26, 26, 26, 0.296875); -webkit-composition-fill-color: rgba(175, 192, 227, 0.230469); -webkit-composition-frame-color: rgba(77, 128, 180, 0.230469); ">-- Demis</span></div><div><br></div></div><div dir="ltr"><br><blockquote type="cite">On Jun 21, 2023, at 16:07, Howard Northfield <Howard.Northfield@uottawa.ca> wrote:<br><br></blockquote></div><blockquote type="cite"><div dir="ltr">
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I am pretty much now used to getting materials only months from expiry from all sources.</div>
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<div class="ContentPasted0">Howard Northfield</div>
<div class="ContentPasted0">Research Associate</div>
<div class="ContentPasted0">Advanced Research Complex (ARC)</div>
University of Ottawa<br>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> labnetwork <labnetwork-bounces@mtl.mit.edu> on behalf of Price, Aimee <price.798@osu.edu><br>
<b>Sent:</b> Tuesday, June 20, 2023 9:50 PM<br>
<b>To:</b> labnetwork@mtl.mit.edu <labnetwork@mtl.mit.edu><br>
<b>Cc:</b> Ramsey, Keith <ramsey.435@osu.edu><br>
<b>Subject:</b> [labnetwork] Alternative distributor for SPR 955?</font>
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<div style="font-size:9pt; font-family:'calibri'; color:#FF4233"><b>Attention : courriel externe | external email</b></div>
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<p class="x_MsoNormal">Dear Labnetwork,</p>
<p class="x_MsoNormal">Does anyone purchase SPR 955 (or any other Shipley/Dupont products) from a distributor other than Kayaku? We have had numerous issues with different materials. In this case, we need to either find a different distributor or begin qualifying
another resist, probably both. The current issue is that we purchased a gallon of SPR955 which was “in stock.” It arrived last week with an expiration date of 7/8/23. Kayaku’s response was that they were required to ship what they had on hand first and
would ask for an extension to the expiration date from the manufacturer. I am still hoping for a better response and solution than that but need to find an alternative in the meantime.</p>
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<p class="x_MsoNormal">If anyone works with a different distributor for Shipley resists, I’d love to hear your experience. I’ll share the final solution from Kayaku and summarize any responses for alternatives.</p>
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<p class="x_MsoNormal">Thank you,</p>
<p class="x_MsoNormal">Aimee Bross Price</p>
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<p class="x_MsoNormal"><span style="">Manager, Nanofabrication</span></p>
<p class="x_MsoNormal"><span style="">The Ohio State University </span></p>
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<p class="x_MsoNormal"><span style="color:#C00000"><a href="mailto:Price.798@osu.edu"><span style="color:#C00000">Price.798@osu.edu</span></a></span></p>
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