SYMPOSIA PAPER Published: 01 January 1989

Using the Predictive Powers of Triangular Co-Ordinate Plots for Designing Agricultural Formulations


An agricultural formulation candidate was developed with the aid of triangular co-ordinate plots. It was found that when a candidate formulation must satisfy many requirements, a plot is useful for managing the large number of variables involved.

A plot was produced which showed how emulsion stability varies with formula composition. Each point in the plot was shown to carry a large amount of information. The point describes the complete composition of the recipe it represents and by its coding it also describes the emulsion stability of the recipe.

From the coding of the first group of points produced for the plot, it was possible to predict what composition regions would most likely produce the best emulsion stability. Subsequent groups of points were added to more closely define the boundaries of the best emulsion stability region.

The preparation of triangular co-ordinate plots show promise for automation. Data for one example given were obtained by laboratory robotics. This capability makes the design of formulations with the aid of triangular co-ordinate plots quite attractive, because the numerous points required can be obtained with a laboratory robotic arm [1].

Author Information

Botts, MF
PPG Industries, Inc., Barberton Technical Center, Barberton, Ohio
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Developed by Committee: E35
Pages: 77–88
DOI: 10.1520/STP26450S
ISBN-EB: 978-0-8031-5106-2
ISBN-13: 978-0-8031-0979-7