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Further to Dee's message, there is also the Getty's <i>Guidelines for Selecting Solid-State Lighting for Museums
</i>(<a href="https://www.getty.edu/conservation/publications_resources/pdf_publications/guidelines-solid-state-lighting.html" id="LPlnk567682" class="OWAAutoLink">https://www.getty.edu/conservation/publications_resources/pdf_publications/guidelines-solid-state-lighting.html</a>).
The C2C Care: How to Change a Lightbulb: LED Lighting for Museums presentation (<a href="https://www.youtube.com/watch?v=T0QVAOfrJQI" id="LPlnk293025" class="OWAAutoLink">https://www.youtube.com/watch?v=T0QVAOfrJQI</a>) is also a good primer.</div>
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Sue Maltby, Conservator, IIC Fellow</div>
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Maltby & Associates Inc.</div>
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Adjunct Professor, Museum Studies Program/Faculty of Information, University of Toronto</div>
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174 Spadina Ave., #508</div>
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Toronto, Ontario</div>
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M5T 2C2</div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Nhcoll-l <nhcoll-l-bounces@mailman.yale.edu> on behalf of Dee Stubbs-Lee <Dee.Stubbs-Lee@nbm-mnb.ca><br>
<b>Sent:</b> Thursday, January 23, 2025 2:28 PM<br>
<b>To:</b> Callomon,Paul <prc44@drexel.edu>; Angela Hornsby <horns076@umn.edu>; nhcoll-l@mailman.yale.edu <nhcoll-l@mailman.yale.edu><br>
<b>Subject:</b> Re: [Nhcoll-l] LED lights in collections</font>
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<p>Hi Angela,<br>
</p>
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</p>
<p>The Canadian Conservation Institute has a technical bulletin on LED lighting that might be helpful if you haven't seen it.<br>
</p>
<p><br>
</p>
<p>Here's the link:<br>
</p>
<p><br>
</p>
<p><a href="https://www.canada.ca/en/conservation-institute/services/conservation-preservation-publications/technical-bulletins/led-lighting-museums.html">LED Lighting in Museums and Art Galleries – Technical Bulletin 36 - Canada.ca</a><br>
</p>
<p><br>
</p>
<p>Dee Stubbs-Lee<br>
</p>
<p>Conservator <br>
</p>
<p>New Brunswick Museum<br>
</p>
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<div id="x_divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> Nhcoll-l <nhcoll-l-bounces@mailman.yale.edu> on behalf of Callomon,Paul <prc44@drexel.edu><br>
<b>Sent:</b> Thursday, January 23, 2025 2:38 PM<br>
<b>To:</b> Angela Hornsby; nhcoll-l@mailman.yale.edu<br>
<b>Subject:</b> Re: [Nhcoll-l] LED lights in collections</font>
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<p class="x_MsoNormal">Changing to LEDs makes sense in many ways. They consume a fraction of the energy used by incandescent or even fluorescent bulbs, and do not get anywhere near as hot. Both factors reduce stress on older light fixtures and thus the danger
of sparking. They do not have ballasts, unlike fluorescents, and are a straight swap-out.
</p>
<p class="x_MsoNormal"> </p>
<p class="x_MsoNormal">The only possible issue is that their color temperature tends to be higher than that of incandescents. Some LED bulbs can be configured to “cool” or “warm” modes with a switch, but most are set at the factory. Cool LEDs can change the
visual perception of colors in exhibits and shared spaces, though that can also be good – many dioramas and specimen displays look better with higher color temperature lighting, and up to now that has often been achieved with halogen bulbs that get very hot
indeed and eat a lot of power. </p>
<p class="x_MsoNormal"> </p>
<p class="x_MsoNormal">One caveat is that the optimistic durability figures many makers give – “lasts seven years!” are just that, optimistic. These bulbs are almost all made in China and to keep the price down, the QC is not all it might be. I’ve had them
fail or start flickering (which can’t be fixed) in less than a year in some cases.
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<p class="x_MsoNormal"><b><span style="font-size:10.0pt; font-family:"Tahoma",sans-serif; color:black">Paul Callomon</span></b><span style="font-size:10.0pt; font-family:"Tahoma",sans-serif; color:black"><br>
<i>Collection Manager, Malacology and General Invertebrates</i></span><span style="">
</span></p>
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<hr size="2" align="center">
</span></div>
<p class="x_MsoNormal"><b><span style="font-size:10.0pt; font-family:"Verdana",sans-serif; color:black">Academy of Natural Sciences of Drexel University, Philadelphia</span></b><span style="font-size:10.0pt; font-family:"Tahoma",sans-serif; color:black"><br>
<i><a href="mailto:callomon@ansp.org">callomon@ansp.org</a> Tel 215-405-5096 - Fax 215-299-1170</i></span><span style="">
</span></p>
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<p class="x_MsoNormal" style="margin-left:.5in"><b><span style="font-size:11.0pt; font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt; font-family:"Calibri",sans-serif"> Nhcoll-l <nhcoll-l-bounces@mailman.yale.edu>
<b>On Behalf Of </b>Angela Hornsby<br>
<b>Sent:</b> Thursday, January 23, 2025 1:29 PM<br>
<b>To:</b> nhcoll-l@mailman.yale.edu<br>
<b>Subject:</b> [Nhcoll-l] LED lights in collections </span></p>
</div>
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<p><b><span style="font-family:"Arial",sans-serif; font-variant:small-caps; color:black">External.</span></b><b><span style="font-family:"Arial",sans-serif; font-variant:small-caps">
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<p class="x_MsoNormal" style="margin-left:.5in">Hi everyone, </p>
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<p class="x_MsoNormal" style="margin-left:.5in">Our campus facilities management would like to change all of our general lighting in non-public collections spaces (dry and wet) to LEDs. I haven't found any sources suggesting major negatives (e.g.,
<a href="https://www.nps.gov/museum/publications/mhi/chap4.pdf">https://www.nps.gov/museum/publications/mhi/chap4.pdf</a>).
</p>
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<p class="x_MsoNormal" style="margin-left:.5in"> </p>
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<p class="x_MsoNormal" style="margin-left:.5in">Does anyone have experience with the change to LEDs, particularly any unanticipated effects?
</p>
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<p class="x_MsoNormal" style="margin-left:.5in"> </p>
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<p class="x_MsoNormal" style="margin-left:.5in">Thanks, </p>
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<p class="x_MsoNormal" style="margin-left:.5in">Angela </p>
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<p class="x_MsoNormal" style="margin-left:.5in">-- </p>
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<p class="x_MsoNormal" style="margin-left:.5in"><span style="color:#222222">Angela Hornsby, Ph.D. (she)</span>
</p>
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<p class="x_MsoNormal" style="margin-left:.5in"><span style="color:#222222">Zoological Collections Manager (MMNH / JFBM)
</span></p>
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<p class="x_MsoNormal" style="margin-left:.5in"><span style="color:#222222">Bell Museum
</span></p>
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<p class="x_MsoNormal" style="margin-left:.5in"><span style="color:#222222">University of Minnesota
</span></p>
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<p class="x_MsoNormal" style="margin-left:.5in"><span style="color:#222222"><a href="https://www.bellmuseum.umn.edu/zoological-collections/">https://www.bellmuseum.umn.edu/zoological-collections/</a></span>
</p>
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<p class="x_MsoNormal" style="margin-left:.5in"><span style="color:#222222"> </span>
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