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<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif">Dear all,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif">I’m reaching out to ask whether any of you have already reflected on or implemented
<b>conservation storage solutions for mollusc and micromollusc collections</b>. We are currently exploring various options and would be very interested in hearing about your experiences, thoughts, or recommendations.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif">To help contextualize our request, I’d like to briefly share some of our current considerations.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span style="font-family:"Calibri",sans-serif">Macromolluscs</span></b><span style="font-family:"Calibri",sans-serif"> (picture 1) Until now, these specimens were stored in “museum-quality” cardboard trays (not certified), glued with
white glue onto chipboard panels, placed in unidentified plastic sleeves, and then laid out on wooden/MDF drawers.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif">This setup raises several concerns:<o:p></o:p></span></p>
<ul style="margin-top:0cm" type="disc">
<li class="MsoNormal" style="mso-list:l4 level1 lfo4"><span style="font-family:"Calibri",sans-serif">emission of VOCs from materials (wood, glue),<o:p></o:p></span></li><li class="MsoNormal" style="mso-list:l4 level1 lfo4"><span style="font-family:"Calibri",sans-serif">plastic sleeves creating microclimates,<o:p></o:p></span></li></ul>
<p class="MsoNormal" style="margin-left:36.0pt"><span style="font-family:"Calibri",sans-serif">= increased risk of
<b>Byne’s disease</b>.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif">We have started replacing the trays and their backing with
<b>ISO 16245-certified conservation board</b>, using <b>starch paste</b>. We're now considering replacing the plastic sleeves and MDF trays with
<b>archival-quality boxes</b>, possibly with or without viewing windows (photo 2).<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif">Has anyone reconditioned similar collections or found other long-term solutions?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span style="font-family:"Calibri",sans-serif">Micromolluscs</span></b><span style="font-family:"Calibri",sans-serif"> We currently use two storage systems:<o:p></o:p></span></p>
<ol style="margin-top:0cm" start="1" type="1">
<li class="MsoNormal" style="mso-list:l5 level1 lfo5"><span style="font-family:"Calibri",sans-serif">microscope slides (some with chipboard elements, which we aim to replace – photo 4),<o:p></o:p></span></li><li class="MsoNormal" style="mso-list:l5 level1 lfo5"><b><span style="font-family:"Calibri",sans-serif">glass tubes</span></b><span style="font-family:"Calibri",sans-serif"> containing
<b>gelatine capsules</b>, plugged with <b>non-chlorine-bleached cotton wool</b>, and placed in
<b>plastic boxes</b> (photo 3).<o:p></o:p></span></li></ol>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif">Points of concern:<o:p></o:p></span></p>
<ul style="margin-top:0cm" type="disc">
<li class="MsoNormal" style="mso-list:l2 level1 lfo6"><b><span style="font-family:"Calibri",sans-serif">soda-lime glass</span></b><span style="font-family:"Calibri",sans-serif"> is unstable over time;
<b>borosilicate glass</b> would be more durable, though its cost is a limiting factor given the quantity (perhaps reserved for types),<o:p></o:p></span></li><li class="MsoNormal" style="mso-list:l2 level1 lfo6"><b><span style="font-family:"Calibri",sans-serif">gelatine capsules</span></b><span style="font-family:"Calibri",sans-serif"> may acidify with time, which is problematic for shells,<o:p></o:p></span></li><li class="MsoNormal" style="mso-list:l2 level1 lfo6"><b><span style="font-family:"Calibri",sans-serif">cotton wool</span></b><span style="font-family:"Calibri",sans-serif">: difficult to source in untreated, unbleached, non-food-grade quality.<o:p></o:p></span></li></ul>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif">We are considering
<b>cellulose-based capsules</b> as a potential alternative, but we lack data on their aging behaviour. Testing would be needed.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif">If you’ve worked on similar issues, developed other solutions, or have suggestions for suitable materials or suppliers, I would love to hear from you. Thank you in advance for any feedback!<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif">Best regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif">Marion Billot<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<td style="border-style:none none none none;border-color:#000000;border-width:0px 0px 0px 0px;padding:0px 0px;" width="253"><font color="#4f4f4f" face="Verdana" size="1">Marion BILLOT</font><br />
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