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<p>Dear Mikkel,</p>
<p>Dirk is almost correct about the battery jars. Though they are
not made or sold anymore as battery jars, if you are lucky you can
find some at some local house furnishing store. I found some very
nice rectangular jars at "Dille & Kamille" a few weeks back in
Belgium while i was there for holidays. Its a huge dutch
franchise, so maybe they have some store in Denmark as well. But
its probable that other stores of this sort run this kind of jars
as well. For me it was great because they sold the jars as retail
for only 2 Euros each. Its not the best jar, since it has some
strong curves made by the uneven melted glass, since these jars
are molded in a cast. But this goes for all battery jars, even the
new ones sold by DWK (Schott was bought by Duran long time ago and
now Duran runs under the name DWK, since they joined with Wheaton
and Kimble, other glassfactories).</p>
<p>Here are the ones form Duran or DWK:
<a class="moz-txt-link-freetext" href="https://www.dwk.com/duran-museum-jar-with-ground-glass-plate">https://www.dwk.com/duran-museum-jar-with-ground-glass-plate</a></p>
<p>They are pretty expensive, and the Lid is not very nice, since it
defers a bit from the jar, so you should grind down the edges. But
they are made of borosilicate, so excelent glass quality (not the
lid!). Prices go between 70-150 Euro per jar.</p>
<p>There are two German suppliers that sell some square sodalime
jars as well (around 20-50 Euro each): <br>
</p>
<p>-
<a class="moz-txt-link-freetext" href="https://www.assistent.eu/en/product/specimen-jars-museum-jars-made-of-clear-glass-with-ground-cover-plate/">https://www.assistent.eu/en/product/specimen-jars-museum-jars-made-of-clear-glass-with-ground-cover-plate/</a><br>
</p>
<p>-
<a class="moz-txt-link-freetext" href="https://www.neubert-glas.de/laborglas/onlineshop/katalog.php?KATfrom=suche&SearchText=pr%E4parat&struc=1_995727484085_1030342896125_1005301727684_1515949502601&kat=1023362157218&PHPSESSID=1effb50f3b77f3e7035b5480d4f6ce4b">https://www.neubert-glas.de/laborglas/onlineshop/katalog.php?KATfrom=suche&SearchText=pr%E4parat&struc=1_995727484085_1030342896125_1005301727684_1515949502601&kat=1023362157218&PHPSESSID=1effb50f3b77f3e7035b5480d4f6ce4b</a>
(german only.. I suggest you call them for more information)<br>
</p>
<p>The problem and this goes as well for the borosilicate and the
cheap house furnishing store jars, is that the sizes are very
limited. So usually very small and nothing compared with the
pretty big sizes you showed in the picture. These are almost
impossible to get new. <br>
</p>
<p><br>
</p>
<p>So there are actually just 2 solutions if you insist in big sized
square jars: One is to ask at some lab-glassblower factory. There
a big jar can costs arround 500-700 Euros each. I just did some
calculating for a project I'm working on. So they do exist! The
jars are welded of plain borosilicate glassplates, so there is no
unevenness as in the molded jars. The welding in the corner can be
seen though, its less smooth as in the battery jars. But not
really a problem. Its just the immense costs.</p>
<p>The other way is to ask at other nat. hist. institutions. Some
have a big "stash" of old jars that may be sold or exchanged for a
favor or whatever. Maybe you are lucky and they will just donate
them. It's they only thing i can think of that excludes a very big
investment. Besides looking for this jars in local second-hand
internet sites. Sometimes there you are lucky too.<br>
</p>
<p><br>
</p>
<p>If you need more info about Jars (cylindical too) just contact me
directly. I have been dealing with this topic for a long time and
have made some good contacts, even within DWK. <br>
</p>
<p><br>
</p>
<p>All the best in the search!<br>
</p>
<p><br>
</p>
<div class="moz-cite-prefix">Am 28.10.22 um 14:53 schrieb Dirk
Neumann:<br>
</div>
<blockquote type="cite"
cite="mid:638b4873-b0ed-dc5f-93ab-c91358637f65@leibniz-lib.de">
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<div class="moz-cite-prefix">Dear Mikkel,</div>
<div class="moz-cite-prefix"><br>
</div>
<div class="moz-cite-prefix">the historic battery jars are no
longer produced; alternatively you can use Schott Borosilicate
tubes which can be customised in diameter and length (5 cm to 35
cm and up to 2.0 tall). You might have seen the tall wide jar I
posted a few days back. But for the collection in Munich they
produced tall wide cyclinders (25 cm x 1,0 m) for the Australian
lungfishes and Arapaima<br>
</div>
<div class="moz-cite-prefix"><br>
</div>
<div class="moz-cite-prefix">These glass cylinders have less
tension within the glass and are more stable against temperature
and humidity shifts (the battery jars can crack if the
temperature e.g. drops within 2-3 days to below 14°C).<br>
</div>
<div class="moz-cite-prefix"><br>
</div>
<div class="moz-cite-prefix">One producer is <a
moz-do-not-send="true" href="https://gassner-glastechnik.de/">
Gaßner Glastechnik</a> in Munich; I have been working with
them for many years.</div>
<div class="moz-cite-prefix"><br>
</div>
<div class="moz-cite-prefix">You can also check directly with
Schott; there is a catalogue, but this is not openly available.
But they still produce specimen jars.<br>
</div>
<div class="moz-cite-prefix"><br>
</div>
<div class="moz-cite-prefix">The also did some rectangular
containers, but smaller ones (approx. 20 cm high and wide).</div>
<div class="moz-cite-prefix"><br>
</div>
<div class="moz-cite-prefix">The other source might be Stölzle
Oberglas in Vienna, but usually they only start production if
the order is above 200 containers (in the past museums teamed up
for orders).<br>
</div>
<div class="moz-cite-prefix"><br>
</div>
<div class="moz-cite-prefix"><br>
</div>
<div class="moz-cite-prefix">Hope this helps</div>
<div class="moz-cite-prefix">Dirk</div>
<div class="moz-cite-prefix"><br>
</div>
<div class="moz-cite-prefix"><br>
</div>
<div class="moz-cite-prefix"><br>
</div>
<div class="moz-cite-prefix">Am 28.10.2022 um 14:27 schrieb Mikkel
Høegh Post:<br>
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<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Verdana",sans-serif">Hi<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Verdana",sans-serif">Here
at the Natural History Museum of Denmark we are preparing
new exhibitions opening 2025. We need additional square
museum glass for wet specimen display -we have a bunch (an
example below), but need more sizes. I wonder if any
(preferable European) company produce such?<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Verdana",sans-serif">Best
regards,<o:p></o:p></span></p>
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<p class="MsoNormal" style="line-height:8.0pt"><b><span
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lang="DA"><o:p></o:p></span></p>
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lang="DA">Statens Naturhistoriske Museum<o:p></o:p></span></p>
<p class="MsoNormal" style="line-height:8.0pt"><b><span
style="font-size:7.5pt;font-family:"Verdana",sans-serif;color:gray"
lang="DA">Zoologisk Museum<o:p></o:p></span></b></p>
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lang="DA">MOB 60 74 10 25<o:p></o:p></span></p>
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