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<div style="direction: ltr;font-family: Tahoma;color: #000000;font-size: 10pt;">I use the MQuant colorimetric test strips. I do not only use them to measure formaldehyde traces in ethanol but also to measure the strength of old formalin solutions. By diluting
the test sample 1000 times with deminerilized water you can even measure the approximate strength of 1-25% formalin (1-10% formaldehyde).
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<a href="http://www.merckmillipore.com/NL/en/product/Formaldehyde-Test,MDA_CHEM-110036" target="_blank">http://www.merckmillipore.com/NL/en/product/Formaldehyde-Test,MDA_CHEM-110036</a><br>
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<div style="direction: ltr;" id="divRpF10114"><font color="#000000" face="Tahoma" size="2"><b>Van:</b> nhcoll-l-bounces@mailman.yale.edu [nhcoll-l-bounces@mailman.yale.edu] namens Bentley, Andrew Charles [abentley@ku.edu]<br>
<b>Verzonden:</b> maandag 14 juli 2014 17:31<br>
<b>Aan:</b> Callomon,Paul<br>
<b>CC:</b> nhcoll-l@mailman.yale.edu<br>
<b>Onderwerp:</b> Re: [Nhcoll-l] Formalin testing in ethanol solutions<br>
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<p class="MsoNormal"><span style="color:#1F497D">Paul</span></p>
<p class="MsoNormal"><span style="color:#1F497D"> </span></p>
<p class="MsoNormal"><span style="color:#1F497D">I have used Rob Waller�s A-F test strips in the past with success but cannot say that I have used them extensively. He sent me a package of them some time ago and I still have a large number left. Would be
happy to send you some samples if you like.</span></p>
<p class="MsoNormal"><span style="color:#1F497D"> </span></p>
<p class="MsoNormal"><span style="color:#1F497D">The work was published here:</span></p>
<p class="MsoNormal"><span style="color:#1F497D"> </span></p>
<p class="MsoNormal"><span style="color:#1F497D">Waller and McAllister 1987. A spot test for distinguishing formalin from alcohol solutions. Curator 30(3): 240-249</span></p>
<p class="MsoNormal"><span style="color:#1F497D"> </span></p>
<p class="MsoNormal"><span style="color:#1F497D">Also, he sent a photocopy of something called EM Quant test strips that apparently work well too but I have not used them:</span></p>
<p class="MsoNormal"><span style="color:#1F497D"> </span></p>
<p class="MsoNormal"><span style="color:#1F497D"><a href="https://us.vwr.com/store/catalog/product.jsp?product_id=4644452" target="_blank">https://us.vwr.com/store/catalog/product.jsp?product_id=4644452</a></span></p>
<p class="MsoNormal"><span style="color:#1F497D"> </span></p>
<p class="MsoNormal"><span style="color:#1F497D">Formaldehyde listed as $80 for 100 strips</span></p>
<p class="MsoNormal"><span style="color:#1F497D"> </span></p>
<p class="MsoNormal"><span style="color:#1F497D">Andy</span></p>
<p class="MsoNormal"><span style="color:#1F497D"> </span></p>
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V V V<br>
Andy Bentley<br>
Ichthyology Collection Manager<br>
University of Kansas<br>
Biodiversity Institute</span></p>
<p class="MsoNormal"><span style="font-size:10.0pt; font-family:"Arial","sans-serif"; color:black" lang="EN-AU">Dyche Hall<br>
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<p class="MsoNormal"><b>From:</b> nhcoll-l-bounces@mailman.yale.edu [mailto:nhcoll-l-bounces@mailman.yale.edu]
<b>On Behalf Of </b>Callomon,Paul<br>
<b>Sent:</b> Monday, July 14, 2014 10:16 AM<br>
<b>To:</b> NH-COLL listserv (nhcoll-l@mailman.yale.edu)<br>
<b>Subject:</b> [Nhcoll-l] Formalin testing in ethanol solutions</p>
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<p class="MsoNormal"> </p>
<p class="MsoNormal">Folks,</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">I�d like to hear what you all are using to test for trace formalin in ethanol solutions. I�ve used color strips before, and have heard mixed reviews of electronic methods. What works best for you?</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal" style="background:white"><b><span style="font-size:10.0pt; color:black">Paul Callomon</span></b><span style="font-size:10.0pt; color:black"><br>
<i>Collection Manager, Malacology, Invertebrate Paleontology and General Invertebrates</i></span><span style="color:black"></span></p>
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<p class="MsoNormal" style="background:white"><b><span style="font-size:10.0pt; color:black">Academy of Natural Sciences of Drexel University, Philadelphia</span></b></p>
<p class="MsoNormal" style="background:white"><span style="font-size:10.0pt; color:black">1900 Benjamin Franklin Parkway, Philadelphia PA 19103-1195, USA<br>
<i><a href="mailto:callomon@ansp.org" target="_blank">callomon@ansp.org</a> Tel 215-405-5096 - Fax 215-299-1170</i></span><span style="font-size:12.0pt; color:black"></span></p>
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