We manufacture CHN elemental analyzers as well as supplies for such analyzers.

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• • Elemental Analyzer
  • Carbon
• • Hydrogen
  • Nitrogen

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TN232

THEORY OF OPERATION Ref: TN232, Rev. 1 In the 440 Analyzer, the carbon, hydrogen, and nitrogen content in organic and inorganic compounds can be determined. Combustion of the weighed sample (typically 1-3 mg; in certain cases up to 500 mg) occurs in pure oxygen under static conditions. With a conversion kit, oxygen and sulfur can be analyzed. A kit for steel and refractories is also available. T...

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TN217

CHN ANALYSIS OF HIGH CONCENTRATION FLUORINE SAMPLES ON THE CE-440 Ref: TN217, Rev. 1 Most compounds containing fluorine can be run successfully on the Exeter Analytical CE-440 under standard operating conditions. The magnesium oxide in the combustion tube reagent packings absorbs fluorine as HF, and releases the hydrogen. However, some difficult to combust, perfluorinated samples can give incorr...

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TN212

ANALYSIS OF NITROCELLULOSE USING THE CE-440 ELEMENTAL ANALYZER Ref: TN212, Rev. 1 Nitrocellulose is the common name for a family of explosive materials based on the cellulose unit C12H20O10. Included among these are pentanitrocellulose, dekanitrocellulose, and pyroxylin. Historically, the nitrogen content of this compound, as well as other munitions, has been analyzed with a nitrometer using the...

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Application Notes and...

Standards Standards Theorectical composition of commonly used standards. Application Notes Select the appropriate number to view or download the Application Note of interest. Number Title 210 Direct Determination of Carbon, Hydrogen, and Nitrogen for Environmental and Industrial Filter Applications 211 Analysis of Pentaerythritol Tetranitrate on the 440 Elemental Analyzer 212 Analysis of Ni...

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TN211

ANALYSIS OF PENTAERYTHRITOL TETRANITRATE ON THE CE-440 ELEMENTAL ANALYZER REV. 1 Ref: TN211, Rev. 1 Pentaerythritol Tetranitrate (PETN) is a compound commonly used industrially in the manufacture of detonating fuse and therapeutically as a vasodilator. 6908. Pentaerythritol Tetranitrate. 2,2-Bis (nitrooxy)-methyl}-1,3-propanediol dinitrate (ester) pentaerythrityltetranitrate; 2,2-bisdihydrozymet...

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