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<div class="moz-cite-prefix">... any form of formaldehyde induced
precipitation should be restricted to the fluid, e.g.
paraformaldehyde needles, cloudiness due to formalin induced
reactions etc. These precipitation should be reversal, i.e. it
should be able to remove these when washing the specimen jars
under hot water with normal dish washing detergent. In case of
salt incrustations this may take some time.<br>
<br>
However, if this not a removable coating (at least in parts), you
are dealing with glass corrosion, which can be triggered by
various causes (normally promoted in ion-rich environments by a
low pH level of the fluid - which can also be specimen induced,
e.g. leaching formic acids from ants, wasps or other acid
containing specimens).<br>
<br>
All the best<br>
Dirk <br>
<br>
<br>
Am 11.03.2014 10:12, schrieb Tom Schioette:<br>
</div>
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<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"
lang="EN-US">I doubt that what Mandy talks of is glass
degradation, or at least if it is, then it is probably
formalin-induced somehow. I see precisely the same thing
which Mandy describes, and, like in her case, in glasses
that have contained formalin, probably also with a component
of seawater, although I never thought about the latter
detail myself.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"
lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"
lang="EN-US">Tom<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"
lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"
lang="EN-US">Tom Schiøtte<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"
lang="EN-US">Natural History Museum of Denmark (Zoology)<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Universitetsparken
15<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">DK-2100
Copenhagen OE<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Denmark<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><a class="moz-txt-link-abbreviated" href="mailto:TSchioette@snm.ku.dk">TSchioette@snm.ku.dk</a><o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<div>
<div style="border:none;border-top:solid #B5C4DF
1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal"><b><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">Fra:</span></b><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">
<a class="moz-txt-link-abbreviated" href="mailto:nhcoll-l-bounces@mailman.yale.edu">nhcoll-l-bounces@mailman.yale.edu</a>
[<a class="moz-txt-link-freetext" href="mailto:nhcoll-l-bounces@mailman.yale.edu">mailto:nhcoll-l-bounces@mailman.yale.edu</a>] <b>På vegne
af </b><a class="moz-txt-link-abbreviated" href="mailto:Evelyn.Ayre@pch.gc.ca">Evelyn.Ayre@pch.gc.ca</a><br>
<b>Sendt:</b> 10. marts 2014 13:30<br>
<b>Til:</b> Mandy Reid<br>
<b>Cc:</b> Anders Hallan; '<a class="moz-txt-link-abbreviated" href="mailto:nhcoll-l@mailman.yale.edu">nhcoll-l@mailman.yale.edu</a>';
<a class="moz-txt-link-abbreviated" href="mailto:nhcoll-l-bounces@mailman.yale.edu">nhcoll-l-bounces@mailman.yale.edu</a><br>
<b>Emne:</b> Re: [Nhcoll-l] Translucent residue<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p><span
style="font-size:10.0pt;font-family:"Arial","sans-serif"">Hi
Mandy,</span><br>
<br>
<span
style="font-size:10.0pt;font-family:"Arial","sans-serif"">This
sounds to me as though you are seeing glass degradation.
Sometimes called glass disease, this phenomena manifests as
iridescence and flaking and is caused by a leaching out of
the alkali component of the glass. I have only seen this on
archaeological glass, but it's possible that this is what's
happening to your glassware. What kind of glassware do you
have? And is it very old?</span><br>
<br>
<b><span
style="font-size:10.0pt;font-family:"Arial","sans-serif""
lang="EN-US">Evelyn Ayre</span></b><span lang="EN-US"><br>
</span><span
style="font-size:10.0pt;font-family:"Arial","sans-serif""
lang="EN-US">Conservator - Intern | Restauratrice -
Stagiaire</span><span lang="EN-US"><br>
</span><span
style="font-size:10.0pt;font-family:"Arial","sans-serif""
lang="EN-US">Preservation Services | Services de
préservation</span><span lang="EN-US"><br>
</span><span
style="font-size:10.0pt;font-family:"Arial","sans-serif""
lang="EN-US">Canadian Conservation Institute | Institut
canadien de conservation </span><span lang="EN-US"><br>
</span><span
style="font-size:10.0pt;font-family:"Arial","sans-serif""
lang="EN-US">Department of Canadian Heritage | Ministère du
Patrimoine canadien </span><span lang="EN-US"><br>
</span><span
style="font-size:10.0pt;font-family:"Arial","sans-serif""
lang="EN-US">1030 Innes Road | 1030 chemin Innes</span><span
lang="EN-US"><br>
</span><span
style="font-size:10.0pt;font-family:"Arial","sans-serif""
lang="EN-US">Ottawa ON Canada K1B 4S7</span><span
lang="EN-US"><br>
</span><span
style="font-size:10.0pt;font-family:"Arial","sans-serif""><a
moz-do-not-send="true" href="mailto:evelyn.ayre@pch.gc.ca"><span
lang="EN-US">evelyn.ayre@pch.gc.ca</span></a></span><span
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</span><span
style="font-size:10.0pt;font-family:"Arial","sans-serif""
lang="EN-US">Telephone | Téléphone 1 (613) 998-3721 ext |
poste 235</span><span lang="EN-US"><br>
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style="font-size:10.0pt;font-family:"Arial","sans-serif""
lang="EN-US">Facsimile | Télécopieur 1 (613) 998-4721</span><span
lang="EN-US"><br>
</span><span
style="font-size:10.0pt;font-family:"Arial","sans-serif""
lang="EN-US">Government of Canada | Gouvernement du Canada</span><span
lang="EN-US"><br>
<br>
</span><img id="_x0000_i1025"
src="cid:part2.09070004.03090705@zsm.mwn.de" alt="Inactive
hide details for Mandy Reid ---10/03/2014 01:20:01
AM---Apologies that this is off the current topic, but does
anyone " width="16" border="0" height="16"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#424282"
lang="EN-US">Mandy Reid ---10/03/2014 01:20:01
AM---Apologies that this is off the current topic, but does
anyone know what the shiny, flaky and slightl</span><span
lang="EN-US"><br>
<br>
</span><span
style="font-size:7.5pt;font-family:"Arial","sans-serif";color:#5F5F5F"
lang="EN-US">From: </span><span
style="font-size:7.5pt;font-family:"Arial","sans-serif""
lang="EN-US">Mandy Reid <</span><span
style="font-size:7.5pt;font-family:"Arial","sans-serif""><a
moz-do-not-send="true"
href="mailto:Mandy.Reid@austmus.gov.au"><span lang="EN-US">Mandy.Reid@austmus.gov.au</span></a></span><span
style="font-size:7.5pt;font-family:"Arial","sans-serif""
lang="EN-US">></span><span lang="EN-US"><br>
</span><span
style="font-size:7.5pt;font-family:"Arial","sans-serif";color:#5F5F5F"
lang="EN-US">To: </span><span
style="font-size:7.5pt;font-family:"Arial","sans-serif""
lang="EN-US"><a class="moz-txt-link-rfc2396E" href="mailto:'nhcoll-l@mailman.yale.edu'">"'nhcoll-l@mailman.yale.edu'"</a> <</span><span
style="font-size:7.5pt;font-family:"Arial","sans-serif""><a
moz-do-not-send="true"
href="mailto:nhcoll-l@mailman.yale.edu"><span lang="EN-US">nhcoll-l@mailman.yale.edu</span></a></span><span
style="font-size:7.5pt;font-family:"Arial","sans-serif""
lang="EN-US">>, </span><span lang="EN-US"><br>
</span><span
style="font-size:7.5pt;font-family:"Arial","sans-serif";color:#5F5F5F"
lang="EN-US">Cc: </span><span
style="font-size:7.5pt;font-family:"Arial","sans-serif""
lang="EN-US">Anders Hallan <</span><span
style="font-size:7.5pt;font-family:"Arial","sans-serif""><a
moz-do-not-send="true"
href="mailto:Anders.Hallan@austmus.gov.au"><span
lang="EN-US">Anders.Hallan@austmus.gov.au</span></a></span><span
style="font-size:7.5pt;font-family:"Arial","sans-serif""
lang="EN-US">></span><span lang="EN-US"><br>
</span><span
style="font-size:7.5pt;font-family:"Arial","sans-serif";color:#5F5F5F"
lang="EN-US">Date: </span><span
style="font-size:7.5pt;font-family:"Arial","sans-serif""
lang="EN-US">10/03/2014 01:20 AM</span><span lang="EN-US"><br>
</span><span
style="font-size:7.5pt;font-family:"Arial","sans-serif";color:#5F5F5F"
lang="EN-US">Subject: </span><span
style="font-size:7.5pt;font-family:"Arial","sans-serif""
lang="EN-US">[Nhcoll-l] Translucent residue</span><span
lang="EN-US"><br>
</span><span
style="font-size:7.5pt;font-family:"Arial","sans-serif";color:#5F5F5F"
lang="EN-US">Sent by: </span><span
style="font-size:7.5pt;font-family:"Arial","sans-serif""><a
moz-do-not-send="true"
href="mailto:nhcoll-l-bounces@mailman.yale.edu"><span
lang="EN-US">nhcoll-l-bounces@mailman.yale.edu</span></a></span><span
lang="EN-US"><o:p></o:p></span></p>
<div class="MsoNormal">
<hr style="color:#8091A5" size="2" width="100%" align="left"
noshade="noshade"></div>
<p class="MsoNormal"><br>
<br>
<br>
<span
style="font-size:10.0pt;font-family:"Calibri","sans-serif"">Apologies
that this is off the current topic, but does anyone know
what the shiny, flaky and slightly mirror-like reside is
that forms on the sides of glassware that has previously
contained 5-10% seawater/formalin that has been buffered
using sodium bicarbonate? It is very difficult to wash of
glassware as a rule but it sometimes flakes off in small
particles.</span><br>
<span
style="font-size:10.0pt;font-family:"Calibri","sans-serif""> </span><br>
<span
style="font-size:10.0pt;font-family:"Calibri","sans-serif"">I
am wondering whether it is a harmful if inadvertently
inhaled.</span><br>
<span
style="font-size:10.0pt;font-family:"Calibri","sans-serif""> </span><br>
<span
style="font-size:10.0pt;font-family:"Calibri","sans-serif"">Any
ideas?</span><br>
<span
style="font-size:10.0pt;font-family:"Calibri","sans-serif""> </span><br>
<span
style="font-size:10.0pt;font-family:"Calibri","sans-serif"">Thanks</span><br>
<span
style="font-size:10.0pt;font-family:"Calibri","sans-serif"">Mandy</span><br>
<span
style="font-size:10.0pt;font-family:"Calibri","sans-serif""> </span><br>
<b><span
style="font-size:7.5pt;font-family:"Arial","sans-serif";color:#0046AD">Dr
Mandy Reid</span></b><span
style="font-size:7.5pt;font-family:"Arial","sans-serif";color:#0046AD"><br>
Collection Manager, Malacology, Australian Museum Research
Institute</span><br>
<b><span
style="font-size:7.5pt;font-family:"Arial","sans-serif";color:#0046AD">Australian
Museum</span></b><span
style="font-size:7.5pt;font-family:"Arial","sans-serif";color:#0046AD"> 6
College Street Sydney NSW 2010 Australia<b><br>
t</b> 61 2 9320 6412 <b>f</b> 61 2 9320 6253 </span><br>
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<pre wrap="">_______________________________________________
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</pre>
</blockquote>
<br>
<br>
<pre class="moz-signature" cols="72">--
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email: Dirk.Neumann(a)zsm.mwn.de
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---------
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