Tristimulus Colorimetry Calculator Program A program has been written in Basic for the Hewlett-Packard 9830 Calculator which performs the calculations of the Reilley and Sawyer experiment on preparation of a screened indicator ["Experiments for Instrumental Methods," MeGraw-Hill. New York, 19fi1, Chapter 6-91,Given input of points from the spectra of the two limiting forms of the indicator, and of two pH-inert dyes, the program calculates the volume ratio in which indicator and dyes should he mixed to produce a screened indicator showing a grey endpoint. This program was prepared by Mr. Fung as part of his work on a Chem 13 News Assistanceship, which is acknowledged with thanks. Copies of the program listing can be obtained on request.
University of Waterloo, Waterloo, Ontario Canada N2L 3Gl
G. F. Atkinson K. H. Fung
Volume 52, Number 2, February 1975
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