The Spectrophotometric Determination of the Color of Milk

Summary 1. The Beckman spectrophotometer provides basic data for spectral composition of energy reflected from a sample and when it is combined with standard colorimetric data (as the I.C.I. Standard Observer and one of the I.C.I. Standard Illuminants) it provides a good means of estimating the color. 2. A convenient index for routine estimations of the darkening in color of evaporated milk can be determined by noting changes in reflectance of light of 520 mμ wave length.