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<DIV><STRONG><FONT size=2 face=Arial>Hi Paul,</FONT></STRONG></DIV>
<DIV><STRONG><FONT size=2 face=Arial></FONT></STRONG> </DIV>
<DIV><STRONG><FONT size=2 face=Arial>I use Schiff reagent, slightly less
convenient than a formalin tester strip but cheaper. Small sample of fluid in a
beaker, pipette a drop of Schiff and depending how quickly and intensely it
turns magenta (or not = negative) you can become quite experienced in
quantifying the amount of formaldehyde present.</FONT></STRONG></DIV>
<DIV><STRONG><FONT size=2 face=Arial>One obvious caveat: be careful not to
contaminate the Schiff bottle!</FONT></STRONG></DIV>
<DIV><STRONG><FONT size=2 face=Arial></FONT></STRONG> </DIV>
<DIV><STRONG><FONT size=2 face=Arial>With all good wishes, Simon.
</FONT></STRONG></DIV>
<DIV> </DIV>
<DIV><STRONG><FONT size=2 face=Arial>Simon Moore MIScT, RSci, FLS,
ACR<BR>Conservator of Natural Sciences and Cutlery Historian,<BR><A
href="http://www.natural-history-conservation.com">www.natural-history-conservation.com</A>
<BR></FONT></STRONG></DIV>
<BLOCKQUOTE
style="BORDER-LEFT: #000000 2px solid; PADDING-LEFT: 5px; PADDING-RIGHT: 0px; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="FONT: 10pt arial; BACKGROUND: #e4e4e4; font-color: black"><B>From:</B>
<A title=prc44@drexel.edu href="mailto:prc44@drexel.edu">Callomon,Paul</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=nhcoll-l@mailman.yale.edu
href="mailto:nhcoll-l@mailman.yale.edu)">NH-COLL listserv
(nhcoll-l@mailman.yale.edu)</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Monday, July 14, 2014 4:16 PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> [Nhcoll-l] Formalin testing in
ethanol solutions</DIV>
<DIV><BR></DIV>
<DIV class=WordSection1>
<P class=MsoNormal>Folks,<o:p></o:p></P>
<P class=MsoNormal><o:p> </o:p></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?<o:p></o:p></P>
<P class=MsoNormal><o:p> </o:p></P>
<P style="BACKGROUND: white" class=MsoNormal><B><SPAN
style="COLOR: black; FONT-SIZE: 10pt">Paul Callomon</SPAN></B><SPAN
style="COLOR: black; FONT-SIZE: 10pt"><BR><I>Collection Manager, Malacology,
Invertebrate Paleontology and General Invertebrates</I></SPAN><SPAN
style="COLOR: black"><o:p></o:p></SPAN></P>
<DIV style="TEXT-ALIGN: center; BACKGROUND: white" class=MsoNormal
align=center><SPAN style="COLOR: black; FONT-SIZE: 10pt">
<HR align=center SIZE=2 width="100%">
</SPAN></DIV>
<P style="BACKGROUND: white" class=MsoNormal><B><SPAN
style="COLOR: black; FONT-SIZE: 10pt">Academy of Natural Sciences of Drexel
University, Philadelphia</SPAN></B><B><SPAN
style="COLOR: black; FONT-SIZE: 10pt"><o:p></o:p></SPAN></B></P>
<P style="BACKGROUND: white" class=MsoNormal><SPAN
style="COLOR: black; FONT-SIZE: 10pt">1900 Benjamin Franklin Parkway,
Philadelphia PA 19103-1195, USA</SPAN><SPAN
style="COLOR: black; FONT-SIZE: 10pt"><BR><I><A
href="mailto:callomon@ansp.org" target=_blank><SPAN
style="COLOR: blue">callomon@ansp.org</SPAN></A> Tel 215-405-5096 - Fax
215-299-1170</I></SPAN><SPAN
style="COLOR: black; FONT-SIZE: 12pt"><o:p></o:p></SPAN></P>
<P class=MsoNormal><o:p> </o:p></P></DIV>
<P>
<HR>
<P></P>_______________________________________________<BR>Nhcoll-l mailing
list<BR>Nhcoll-l@mailman.yale.edu<BR>http://mailman.yale.edu/mailman/listinfo/nhcoll-l<BR><BR>_______________________________________________
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