Posted in | Materials Processing

Precise & Accurate CHN Data from Low Weight Samples

A new report from Exeter Analytical demonstrates how the Model 440 CHN Analyser provides precise and accurate determination of percentage Carbon, Hydrogen and Nitrogen on samples as small as 0.3 milligrams (mg).

Using Atropine (8-Methyl-8-azabicyclo[3.2.1]oct-3-yl) 3-hydroxy-2-phenylpropanoate) as the test compound the Model 440 produced data from 0.3mg samples which only varied within +/- 0.12% of the theoretical CHN values. In environments such as pharmaceutical research and synthetic chemistry laboratories, where the weight of new compounds for analytical purposes is often limited, the ability to reliably generate reliable CHN data on sub 0.5 milligram samples is highly valuable.

The Exeter Analytical Model 440 is a static combustion CHN Elemental Analyser, with a unique horizontal furnace design, which enables easy removal of sample residue between each analysis.  Because the Model 440 is able to effectively eliminate troublesome residue build-up, its gas flow characteristics are superior to other CHN Analysers leading to longer-term calibration stability as well as enhanced accuracy and precision for measured sample data.

Because the Model 440 provides complete control over combustion parameters it is able to reproducibly achieve 100% combustion with the widest range of sample types. Though incorporation of extensive automation in the Model 440 and intuitive software – the percentage Carbon (C), Hydrogen (H) and Nitrogen (N) in samples can be determined in as little as 5 minutes.

For a copy of 'Precision & Accurate CHN Data from Low Weight Samples' report and further information about the Model 440 CHN analyser please contact Exeter Analytical on +44-2476-323223 (+1-978-251-1411 in North America) or email [email protected]

Exeter Analytical is a company dedicated to elemental microanalysis for over 25 years. Our expertise and experience with instruments, consumables and supplies has allowed us to better understand all issues facing microanalysts.  As a consequence, whether you are a regular or an occasional purchaser, experienced and knowledgeable staff is always available to provide technical advice.


Please use one of the following formats to cite this article in your essay, paper or report:

  • APA

    Exeter Analytical (UK), Ltd. (2019, February 08). Precise & Accurate CHN Data from Low Weight Samples. AZoM. Retrieved on July 09, 2020 from

  • MLA

    Exeter Analytical (UK), Ltd. "Precise & Accurate CHN Data from Low Weight Samples". AZoM. 09 July 2020. <>.

  • Chicago

    Exeter Analytical (UK), Ltd. "Precise & Accurate CHN Data from Low Weight Samples". AZoM. (accessed July 09, 2020).

  • Harvard

    Exeter Analytical (UK), Ltd. 2019. Precise & Accurate CHN Data from Low Weight Samples. AZoM, viewed 09 July 2020,

Tell Us What You Think

Do you have a review, update or anything you would like to add to this news story?

Leave your feedback