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<div class="moz-cite-prefix">Dear Mandy & Evelyn<br>
<br>
this seems to be especially an issue with soda-lime glass of poor
quality (especially in the 1940ies to 1950ies). Check (against
light) if microcracks are visible (opening fissures) - if yes,
replace the specimen jars as jars may crack spontaneously (at
accelerated rate under fluctuating environments / climate control)
and are difficult to monitor over years.<br>
<br>
All the best<br>
Dirk <br>
<br>
Am 10.03.2014 13:30, schrieb <a class="moz-txt-link-abbreviated" href="mailto:Evelyn.Ayre@pch.gc.ca">Evelyn.Ayre@pch.gc.ca</a>:<br>
</div>
<blockquote
cite="mid:OF3AC02090.676E60EA-ON85257C97.00440417-85257C97.0044B0E2@pch.gc.ca"
type="cite">
<p><font size="2" face="sans-serif">Hi Mandy,</font><br>
<br>
<font size="2" face="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?</font><br>
<br>
<font size="2" face="Arial"><b>Evelyn Ayre</b></font><br>
<font size="2" face="Arial">Conservator - Intern | Restauratrice
- Stagiaire</font><br>
<font size="2" face="Arial">Preservation Services | Services de
préservation</font><br>
<font size="2" face="Arial">Canadian Conservation Institute |
Institut canadien de conservation </font><br>
<font size="2" face="Arial">Department of Canadian Heritage |
Ministère du Patrimoine canadien </font><br>
<font size="2" face="Arial">1030 Innes Road | 1030 chemin Innes</font><br>
<font size="2" face="Arial">Ottawa ON Canada K1B 4S7</font><br>
<font size="2" face="Arial"><a class="moz-txt-link-abbreviated" href="mailto:evelyn.ayre@pch.gc.ca">evelyn.ayre@pch.gc.ca</a></font><br>
<font size="2" face="Arial">Telephone | Téléphone 1 (613)
998-3721 ext | poste 235</font><br>
<font size="2" face="Arial">Facsimile | Télécopieur 1 (613)
998-4721</font><br>
<font size="2" face="Arial">Government of Canada | Gouvernement
du Canada</font><br>
<br>
<img src="cid:part1.05090506.04070105@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"><font size="2"
color="#424282" face="sans-serif">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</font><br>
<br>
<font size="1" color="#5F5F5F" face="sans-serif">From: </font><font
size="1" face="sans-serif">Mandy Reid
<a class="moz-txt-link-rfc2396E" href="mailto:Mandy.Reid@austmus.gov.au"><Mandy.Reid@austmus.gov.au></a></font><br>
<font size="1" color="#5F5F5F" face="sans-serif">To: </font><font
size="1" face="sans-serif"><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>, </font><br>
<font size="1" color="#5F5F5F" face="sans-serif">Cc: </font><font
size="1" face="sans-serif">Anders Hallan
<a class="moz-txt-link-rfc2396E" href="mailto:Anders.Hallan@austmus.gov.au"><Anders.Hallan@austmus.gov.au></a></font><br>
<font size="1" color="#5F5F5F" face="sans-serif">Date: </font><font
size="1" face="sans-serif">10/03/2014 01:20 AM</font><br>
<font size="1" color="#5F5F5F" face="sans-serif">Subject: </font><font
size="1" face="sans-serif">[Nhcoll-l] Translucent residue</font><br>
<font size="1" color="#5F5F5F" face="sans-serif">Sent by: </font><font
size="1" face="sans-serif"><a class="moz-txt-link-abbreviated" href="mailto:nhcoll-l-bounces@mailman.yale.edu">nhcoll-l-bounces@mailman.yale.edu</a></font><br>
</p>
<hr style="color:#8091A5; " size="2" width="100%" align="left"
noshade="noshade"><br>
<br>
<br>
<font size="2" face="Calibri">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.</font><br>
<font size="2" face="Calibri"> </font><br>
<font size="2" face="Calibri">I am wondering whether it is a
harmful if inadvertently inhaled.</font><br>
<font size="2" face="Calibri"> </font><br>
<font size="2" face="Calibri">Any ideas?</font><br>
<font size="2" face="Calibri"> </font><br>
<font size="2" face="Calibri">Thanks</font><br>
<font size="2" face="Calibri">Mandy</font><br>
<font size="2" face="Calibri"> </font><br>
<font size="1" color="#0046AD" face="Arial"><b>Dr Mandy Reid</b></font><font
size="1" color="#0046AD" face="Arial"><br>
Collection Manager, Malacology, Australian Museum Research
Institute</font><br>
<font size="1" color="#0046AD" face="Arial"><b>Australian Museum</b></font><font
size="1" color="#0046AD" face="Arial"> 6 College Street Sydney
NSW 2010 Australia</font><font size="1" color="#0046AD"
face="Arial"><b><br>
t</b></font><font size="1" color="#0046AD" face="Arial"> 61 2
9320 6412 </font><font size="1" color="#0046AD" face="Arial"><b>f</b></font><font
size="1" color="#0046AD" face="Arial"> 61 2 9320 6253 </font><br>
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<pre class="moz-signature" cols="72">--
Dirk Neumann
Tel: 089 / 8107-111
Fax: 089 / 8107-300
email: Dirk.Neumann(a)zsm.mwn.de
Postanschrift:
Staatliche Naturwissenschaftliche Sammlungen Bayerns
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Besuchen Sie unsere Sammlung:
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---------
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Tel: +49-89-8107-111
Fax: +49-89-8107-300
email: Dirk.Neumann(a)zsm.mwn.de
postal address:
Bavarian Natural History Collections
The Bavarian State Collection of Zoology
Dirk Neumann, Section Ichthyology / DNA-Lab
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Visit our section at:
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