Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Chemical analysis
Patent
1998-02-20
2000-05-16
Callahan, Timothy P.
Data processing: measuring, calibrating, or testing
Measurement system in a specific environment
Chemical analysis
702 30, G01N 3160
Patent
active
060649453
ABSTRACT:
A system and method for analyzing data from a gel permeation chromatography (GPC) or size exclusion chromatography (SEC) system for determining a polymeric sample's molecular weight distribution (MWD) and intrinsic viscosity law (IVL). Data from two or more detectors is used with a least-squares minimization fit. A novel method includes the simultaneous determination of a sample's MWD and IVL using data from two or more detectors. Detectors include a Light Scattering (LS) detector, viscometer (V) and a refractive index (RI) detector. The present invention is insensitive to detector noise in the baseline regions of the peak curve.
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Brun Yefim
Gorenstein Marc V.
Callahan Timothy P.
Janiuk Anthony J.
Michaelis Brian
Nguyen Linh
Waters Investments Limited
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