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This article in SSSAJ

  1. Vol. 39 No. 3, p. 592-593
    Received: Dec 16, 1974
    Accepted: Feb 27, 1975

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Versatile Multirange Analytical Manifold for Automated Analysis of Nitrate-Nitrogen1

  1. W. A. Jackson,
  2. C. E. Frost and
  3. D. M. Hildreth2



This note describes a technique for extending up to 100 ppm the limits of determining nitrate-nitrogen in solution using a Technicon Autoanalyzer system.3 The same modified analytical manifold can be used to determine three concentration ranges of nitrate nitrogen 0–1, 0–10, and 0–100 ppm. To change concentration range, change the sample entry point in the manifold and standardize the instrument within the proper range.

3 Product names are listed for the benefit of the reader and does not imply endorsement or preferential treatment by the U. S. Dept. of Agriculture.

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