Waters Technologies Corporation

Steven M Byrd

Raymond P Fisk

Frank John Marszalkowski, Jr

Mathew H DeLano

Stephen J Shiner

Lavelay Kizekai

Chromatographic systems for size exclusion chromatography (SEC) are provided that comprise an inlet, an outlet, an analytic column having a first interior volume that has a first length and a first cross-sectional area normal to the first length, the first interior volume containing a first stationary phase, and a guard column having a second interior volume that has a second length and a second cross-sectional area normal to the second length, the second interior volume containing a second stationary phase. The inlet is in fluid communication with the guard column, the guard column is in fluid communication with the analytic column, and the analytic column is in fluid communication with the outlet. Moreover, the second length is smaller than the first length, and the second cross-sectional area is smaller than the first cross-sectional area.

Growing community of inventors

Ashland, MA, United States of America

Steven M Byrd