Patent ID: 7199595
Filing Date: 2007-04-03
Classification: G01N

Abstract:
1. A fluid property quality control method, comprising the steps of: a) obtaining a set of calibration fluids representative of a manufacturing process; b) performing impedance measurements on each of the calibration fluids to obtain first impedance spectroscopy (IS) data, wherein the first IS data include data for at least three frequencies; c) using an at least one statistical technique to analyze the first IS data providing first IS signatures indicative of properties for each of the calibration fluids; d) performing impedance measurements on a test fluid providing second IS data, wherein the second IS data include data for at least three frequencies; e) using the at least one statistical technique to analyze the second IS data providing second IS signatures indicative of properties of the test fluid; f) comparing the first IS signatures and the second IS signatures providing quality control information relating to the properties of the test fluid; and g) modifying the manufacturing process responsive to the quality control information;