To determine the significance of fluorescence and similar phenomena upon the optical measurements, solutions of different concentrations of Shell sample 100 in Nujol were made, and their optical densities (log 1/T) were measured on the Hardy spectrophotometer. The results showed that the oils obeyed Beer's law.Further work in which the transmission curves are being expressed by an equation is being carried on to provide constants that are a function of the color of the oils. In this manner it is hoped that a more definite correlation between the color and other properties of the oils may be obtained.

No abstract

No abstract

No abstract

No abstract