Abstract
Precision color measurements of oils, fats, waxes, etc. can be made with a Photoelectric Spectrophotometer, and their absorption or reflection determined with a degree of exactness not possible with any visual method. Oils of similar chemical constitution, although widely different in color, give similar spectral absorption curves. Oils of dissimilar chemical constitution, although alike when measured on the Lovibond scale, give dissimilar spectral absorption curves. This photo-electric method of measuring color may enable the oil chemist to make use of a method of color measurement that will disclose fundamental data.
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