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<div class="moz-cite-prefix">Hi Esther,</div>
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<div class="moz-cite-prefix">to preserve the (living) colouration of
specimens usually requires specific preservatives (which usually
are not allowed to be used on exhibition anyway); what is still
recognisable in preserved specimens is mostly the pigmentation
pattern. Melanophores can be easily damaged by UV radiation, so
the question is not so much how much lux would be appropriate (or
not), but how high the UV radiation inside the gallery would be.
Usually, light levels should be kept as low as possible, a rough
estimate is "150 lux or less". If you have lamps that emit UV
light, UV filters should be considered. Also (even faint) sunlight
exposure should be avoided as best as possible (but you surely
considered this).</div>
<div class="moz-cite-prefix"><br>
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<div class="moz-cite-prefix">Hope this helps,</div>
<div class="moz-cite-prefix">best wishes to Leiden</div>
<div class="moz-cite-prefix">Dirk<br>
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<div class="moz-cite-prefix">Am 17.12.2018 um 11:42 schrieb Esther
Dondorp:<br>
</div>
<blockquote type="cite"
cite="mid:CAGaR2xd4T4FYE9y6n2K3coyd3fbGJZycCfRpqORQJ8qdiVLs0Q@mail.gmail.com">
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<div dir="ltr">Dear all,
<div><br>
</div>
<div>For our new exhibitions we have some fluid preserved
(ethanol) specimens that will be on display for the public.
For dry mounted specimens we have lighting guidelines but for
fluid preserved specimens it is thought that there are no
restrictions because ethanol does fade the colors anyway. I
think that light can decolorate a fluid specimen too so that
we need some standards for them aswell. </div>
<div><br>
</div>
<div>I am curious what others use as a light regime for fluid
specimens. How long and under what lightstrength (lux) do you
exhibit an alchol specimen to make sure it does not fade too
much? </div>
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<div dir="ltr" class="m_5966848820607234657gmail_signature"
data-smartmail="gmail_signature">
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<div><font face="Arial">Many thanks,</font></div>
<div><font face="Arial"><br>
</font></div>
<div><font face="Arial"><br>
</font></div>
<font face="Arial">Esther Dondorp</font>
<div><font face="Arial">collections manager</font></div>
<div><img style="float:left;width:160px;height:82px"
src="https://06ecba7b-a-deac235a-s-sites.googlegroups.com/a/naturalis.nl/signatures/home/logo-new.png"
moz-do-not-send="true"></div>
<br>
<br>
<br>
<br>
<br>
<br>
<sub>071-751 9313 - </sub>
<div><sub><a href="mailto:esther.dondorp@naturalis.nl"
target="_blank" moz-do-not-send="true">esther.dondorp@naturalis.nl</a>
- <a href="https://www.naturalis.nl"
target="_blank" moz-do-not-send="true">www.naturalis.nl</a></sub></div>
<div><sub><font size="“1”">Vondellaan 55, 2332 AA
Leiden</font></sub></div>
<div><font size="“1”"><sub>Postbus 9517, 2300 RA
Leiden</sub></font></div>
<div><font size="“2”"><br>
</font></div>
<br>
<br>
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<div><br>
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<p><br>
</p>
<pre class="moz-signature" cols="72">--
Dirk Neumann
Tel: 089 / 8107-111
Fax: 089 / 8107-300
*new email: neumann(a)snsb.de*
Postanschrift:
Staatliche Naturwissenschaftliche Sammlungen Bayerns
Zoologische Staatssammlung München
Dirk Neumann, Sektion Ichthyologie / DNA-Storage
Münchhausenstr. 21
81247 München
Besuchen Sie unsere Sammlung:
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---------
Dirk Neumann
Tel: +49-89-8107-111
Fax: +49-89-8107-300
*new email: neumann(a)snsb.de*
postal address:
Bavarian Natural History Collections
The Bavarian State Collection of Zoology
Dirk Neumann, Section Ichthyology / DNA-Storage
Muenchhausenstr. 21
81247 Munich (Germany)
Visit our section at:
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