Patent ID: 9354162
Filing Date: 2016-05-31
CPC Classification: G01B,G01N

Claim Text:
1. A method for quantifying a quality parameter of a liquid sample, the method comprising the steps of: measuring, with a refractometer, refractive index of the liquid sample; measuring, with a pH meter, pH of the liquid sample; illuminating, with a laser ellipsometric apparatus, the liquid sample contained in a cell having a reflective surface attached to an interior bottom wall of said cell; obtaining a measurement of the liquid sample with said laser ellipsometric apparatus; determining the polyphenol film thickness based on the refractive index of the liquid sample and the obtained measurement from the laser ellipsometric apparatus; determining a quality parameter of the liquid sample based on a comparison of the determined polyphenol film thickness and the measured pH; and tabulating and/or presenting the determined quality parameter in graphical form.