Patent ID: 8326548

Claim:
A method for determining a wax appearance temperature for a material comprising: a first process comprising; performing a reduced spectral analysis on the material and producing a first wavelength range at a temperature; determining a first area for a second wavelength range wherein the first area is defined by the area under a first peak of the reduced spectral analysis; determining a second area for a third wavelength range wherein the second area is defined by the area under a second peak of the reduced spectral analysis; dividing the first area and the second area to calculate a numerical data point; a second process comprising; repeating the first process at least three times using the material at a different temperature for each repetition and calculating a numerical data point for each process; creating a data representation showing the division of the first area and the second area versus the temperatures; determining a slope change in the data representation; and using the slope change to determining the wax appearance temperature for the material.