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Date: Tue, 16 Sep 2003 12:27:46 -0400
Reply-To: List Moderator <approval1**At_Symbol_Here**esf.uvm.edu>
Sender: DCHAS-L Discussion List <DCHAS-L**At_Symbol_Here**LIST.UVM.EDU>
From: List Moderator <approval1**At_Symbol_Here**esf.uvm.edu>
Subject: Correlation calculations
Date: Tue, 16 Sep 2003 07:02:26 -0700 (PDT)
From: Charles Davis
Thanks Donna, I was going to mention the exact same
reference.
Charles Davis
p.s. Group question:
Does anyone know which calculation for the correlation
of the result of acid number method and methylation
method of fatty acid analysis is correct. I have been
using Cs/Es where Cs is the acid number from the
titration method and Es is the acid number of the
sample. This is for determination of fatty acid
percent in candle waxes. I have had a person tell me
it doesn't matter which way you divide, however, I
have found this to be incorrect. The method tolerance
for the correlation is 0.8-1.20. the original
calculation was done by an Asian lab and I have since
modified to suit U.S. Customs requirements. If anyone
has any paraffin or candle experience and can help me
with this, please reply.
Thanking you in advance,
Charles Davis
Research Scientist
Bureau Veritas, Inc.
716/505-3300, ext.3345
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