Product category:
Titration equipment
News Release from: Stirling Service and Diagnostics | Subject: Tan
Edited by the Laboratorytalk Editorial
Team on 14 October 2003
Getting a good Tan
Quicker, simpler and more accurate methods for total acid number (Tan) analysis and moisture content
Multitrator says it has made its thermometric total acid number (Tan) method more sensitive, improved the precision, reduced the amount of sample required and made the titration faster It is eminently suitable for fully automated operation
This article was originally published on Laboratorytalk on 29 Aug 2002 at 8.00am (UK)
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Just weigh in the oil samples, put the beakers in the sample changer carousel, click the program start button and walk away to another task.
Of course, with thermometric there's no pH electrodes to clog, foul and dry out.
With the thermometric method, Multitrator says it has done more than tweak the method; it has changed the chemistry.
More than 20 years ago, another titration company developed the 2,2 dimethoxypropane (DMP) thermometric titration method for moisture.
While it was a definite improvement over the Karl Fischer volumetric method in many respects, precision, sensitivity and rounded endpoints in some sample matrices were always a problem.
By substituting a different reagent and tuning up some other aspects of the determination, much sharper endpoints and much improved precision have resulted without sacrificing the simplicity of the DMP method.
Happily, this new procedure is also amenable to full automation.
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