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    <p>Hey Tonya,</p>
    <p>I would recommend to measure the density of the solution before
      assuming anything. With this you can calculate what percentage of
      strength you can expect. Usually this can vary very much from
      literature, to literature. And i really have never heard the use
      of ethanol in clearings. The ones I have made are all in plain
      glycerol and water and are preserved very well.<br>
    </p>
    <p>And I would not add any thymol, since if the solution is above
      65% mold growth is inhibited. Why use poison if not needed...</p>
    <p><br>
    </p>
    <p>All the best,<br>
    </p>
    <p><br>
    </p>
    <div class="moz-cite-prefix">Am 06.10.22 um 04:32 schrieb Bentley,
      Andrew Charles:<br>
    </div>
    <blockquote type="cite"
      cite="mid:56B1FB95-53FE-4279-997F-186EC4AD478C@ku.edu">
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        <p class="MsoNormal">Tonya<o:p></o:p></p>
        <p class="MsoNormal"><o:p> </o:p></p>
        <p class="MsoNormal">We have sometimes mixed different
          proportions of glycerin and 70% ethanol to make the liquid
          less viscous and thus reduce bubble formation in cavities of
          C&S specimens but otherwise use full strength glycerin for
          these specimens with a couple of crystals of thymol added to
          prevent mold growth.  The addition of 70% ethanol, as long as
          not too much, does not seem to affect these specimens in any
          adverse way – that we can tell.<o:p></o:p></p>
        <p class="MsoNormal"><o:p> </o:p></p>
        <p class="MsoNormal">Andy<o:p></o:p></p>
        <p class="MsoNormal"><o:p> </o:p></p>
        <div>
          <div>
            <p class="MsoNormal"><span style="color:black" lang="EN-AU"> 
                  A  :             A  :             A  :<br>
 }<(((_°>.,.,.,.}<(((_°>.,.,.,.}<)))_°><br>
                    V                V                V<br>
                Andy Bentley<br>
                Ichthyology Collection Manager<br>
                University of Kansas<br>
                Biodiversity Institute</span><span style="color:black"><o:p></o:p></span></p>
            <p class="MsoNormal"><span style="color:black" lang="EN-AU">Dyche
                Hall<br>
                <a href="x-apple-data-detectors://9/"
                  title="x-apple-data-detectors://9/"
                  moz-do-not-send="true"><span style="color:#954F72">1345
                    Jayhawk Boulevard</span></a><br>
                <a href="x-apple-data-detectors://9/"
                  title="x-apple-data-detectors://9/"
                  moz-do-not-send="true"><span style="color:#954F72">Lawrence,
                    KS, 66045-7561</span></a><br>
                <a href="x-apple-data-detectors://9/"
                  title="x-apple-data-detectors://9/"
                  moz-do-not-send="true"><span style="color:#954F72">USA</span></a><br>
                <br>
                Tel: <a href="tel:%28785%29%20864-3863" target="_blank"
                  title="tel:%28785%29%20864-3863"
                  moz-do-not-send="true"><span style="color:#954F72">(785)
                    864-3863</span></a><br>
                Fax: <a href="tel:%28785%29%20864-5335" target="_blank"
                  title="tel:%28785%29%20864-5335"
                  moz-do-not-send="true"><span style="color:#954F72">(785)
                    864-5335</span></a> <br>
                Email: <a href="mailto:abentley@ku.edu" target="_blank"
                  title="mailto:abentley@ku.edu" moz-do-not-send="true"><span
                    style="color:#954F72">abentley@ku.edu</span></a>  </span><span
                style="color:black"><o:p></o:p></span></p>
            <p class="MsoNormal"><span style="color:black">ORCID: </span><span
                style="color:#494A4C;background:white"><a
href="https://nam10.safelinks.protection.outlook.com/?url=https%3A%2F%2Forcid.org%2F0000-0002-3093-1258&data=04%7C01%7Cabentley%40ku.edu%7C5720c0e4d0f94b9e0df008da0127752c%7C3c176536afe643f5b96636feabbe3c1a%7C0%7C0%7C637823566221065460%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=LFnPbiFA9HMZ8k85%2F0%2FOx5vJxTNhZTjAo7S%2BqrDAh6c%3D&reserved=0"
                  title="Original URL:
                  https://orcid.org/0000-0002-3093-1258
                  Click to follow link." moz-do-not-send="true"><span
                    style="color:#954F72">https://orcid.org/0000-0002-3093-1258</span></a></span><span
                style="color:black"><o:p></o:p></span></p>
            <p class="MsoNormal"><span style="color:black" lang="EN-AU"><a
                  href="http://ichthyology.biodiversity.ku.edu/"
                  target="_blank"
                  title="http://ichthyology.biodiversity.ku.edu/"
                  moz-do-not-send="true"><span style="color:#954F72">http://ichthyology.biodiversity.ku.edu</span></a></span><span
                style="color:black"><o:p></o:p></span></p>
            <p class="MsoNormal"><span style="color:black">    A 
                :             A  :             A  :<br>
 }<(((_°>.,.,.,.}<(((_°>.,.,.,.}<)))_°><br>
                    V                V                V<o:p></o:p></span></p>
          </div>
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        <p class="MsoNormal"><o:p> </o:p></p>
        <p class="MsoNormal"><o:p> </o:p></p>
        <div style="border:none;border-top:solid #B5C4DF
          1.0pt;padding:3.0pt 0in 0in 0in">
          <p class="MsoNormal"><b><span
                style="font-size:12.0pt;color:black" lang="EN-AU">From:
              </span></b><span style="font-size:12.0pt;color:black"
              lang="EN-AU">Nhcoll-l
              <a class="moz-txt-link-rfc2396E" href="mailto:nhcoll-l-bounces@mailman.yale.edu"><nhcoll-l-bounces@mailman.yale.edu></a> on behalf of
              "Haff, Tonya (NCMI, Crace)" <a class="moz-txt-link-rfc2396E" href="mailto:Tonya.Haff@csiro.au"><Tonya.Haff@csiro.au></a><br>
              <b>Date: </b>Wednesday, October 5, 2022 at 6:13 PM<br>
              <b>To: </b><a class="moz-txt-link-rfc2396E" href="mailto:nhcoll-l@mailman.yale.edu">"nhcoll-l@mailman.yale.edu"</a>
              <a class="moz-txt-link-rfc2396E" href="mailto:nhcoll-l@mailman.yale.edu"><nhcoll-l@mailman.yale.edu></a><br>
              <b>Subject: </b>[Nhcoll-l] cleared and stained amphibians<o:p></o:p></span></p>
        </div>
        <div>
          <p class="MsoNormal"><span lang="EN-AU"><o:p> </o:p></span></p>
        </div>
        <p class="MsoNormal"><span lang="EN-AU">Hello all,<o:p></o:p></span></p>
        <p class="MsoNormal"><span lang="EN-AU"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span lang="EN-AU">We have some cleared and
            stained small frogs that are, I suspect, stored in a mixture
            of glycerine and ethanol. I have read in John’s Fluid
            Preservation book that some people use a mixture the two at
            a 1:1 ratio (but at what ETOH concentration I am not sure),
            but I wonder if any of you would share how you store similar
            specimens? Some of the jars need to be topped up, so I also
            wonder if it’s best to top up using a 1:1 ratio of glycerine
            to ethanol (given that’s what it *<b>looks</b>* like, ha
            ha), or remove all fluid and replace, or…? Thoughts, as
            usual, appreciated!<o:p></o:p></span></p>
        <p class="MsoNormal"><span lang="EN-AU"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span lang="EN-AU">Cheers,<o:p></o:p></span></p>
        <p class="MsoNormal"><span lang="EN-AU"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span lang="EN-AU">Tonya<o:p></o:p></span></p>
        <p class="MsoNormal"><span lang="EN-AU"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span style="mso-fareast-language:EN-AU"
            lang="EN-AU">-------------------------------------------------<o:p></o:p></span></p>
        <p class="MsoNormal"><span style="mso-fareast-language:EN-AU"
            lang="EN-AU">Dr. Tonya M. Haff<o:p></o:p></span></p>
        <p class="MsoNormal"><span style="mso-fareast-language:EN-AU"
            lang="EN-AU">Collection Manager<o:p></o:p></span></p>
        <p class="MsoNormal"><span style="mso-fareast-language:EN-AU"
            lang="EN-AU">Australian National Wildlife Collection<o:p></o:p></span></p>
        <p class="MsoNormal"><span style="mso-fareast-language:EN-AU"
            lang="EN-AU">CSIRO<o:p></o:p></span></p>
        <p class="MsoNormal"><span style="mso-fareast-language:EN-AU"
            lang="EN-AU">+61(0)419569109<o:p></o:p></span></p>
        <p class="MsoNormal"><span style="mso-fareast-language:EN-AU"
            lang="EN-AU"><a
href="https://nam10.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.csiro.au%2Fen%2Fabout%2Ffacilities-collections%2Fcollections%2Fanwc&data=05%7C01%7Cabentley%40ku.edu%7C0ef503da722a44a5569c08daa727284c%7C3c176536afe643f5b96636feabbe3c1a%7C0%7C0%7C638006083885233690%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=xo7oQ1sFwdNOMO0Cpp68SkGfv2l0GX0YAd06SULP9mc%3D&reserved=0"
              moz-do-not-send="true">https://www.csiro.au/en/about/facilities-collections/collections/anwc</a><o:p></o:p></span></p>
        <p class="MsoNormal"><span lang="EN-AU"><o:p> </o:p></span></p>
      </div>
      <br>
      <fieldset class="moz-mime-attachment-header"></fieldset>
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