Articles by Christopher J. Hudalla - Chromatography Online
Articles by Christopher J. Hudalla

Christopher J. Hudalla


Articles
Analysis of Steroids by UltraPerformance Convergence Chromatography
December 1, 2012

Waters Corporation

Synthesis and applications of BEH particles in liquid chromatography
October 1, 2012

How ethylene-bridged hybrid inorganic-organic (BEH) particles are prepared, and how their special quallities can be used to improve separations.

Size-Exclusion Ultra Performance Liquid Chromatography Analysis of Trastuzumab
July 26, 2012

This application presents the impact that mobile phase composition (pH and ionic strength) can have on this separation of protein aggregation. It also expands on some of the primary considerations necessary for the successful transfer of a developed SE-UPLC method.

Maximizing HPLC Productivity with 2.5 µm Extended Performance (XP) Columns
July 2, 2012

Waters Application Note

Maximizing HPLC Productivity with 2.5 μm Extended Performance (XP) Columns
June 1, 2012

The migration to chromatographic methods utilizing smaller particle sizes has been well demonstrated to increase productivity through faster, more efficient separations.

Maximizing HPLC Productivity with 2.5 µm Extended Performance (XP) Columns
May 31, 2012

This application demonstrates the increases in productivity attainable with conventional HPLC configurations,utilizing the new 2.5 μm, eXtended Performance (XP) columns.

Synthesis and Applications of BEH Particles in Liquid Chromatography
April 1, 2012

How ethylene-bridged hybrid inorganic–organic (BEH) particles are prepared and how their special qualities can be used to improve separations

Exploring UPLC Selectivity with New High Strength Silica (HSS) Cyano and PFP Stationary Phases
September 1, 2011

For successful chromatographic method development, it is advantageous to maximize the difference in column selectivity, or "selectivity space" investigated in order to minimize the number of critical analyte co-elutions.

Basic Principles for Purification Using Supercritical Fluid Chromatography
November 1, 2010

Although supercritical fluid chromatography (SFC) is not a new technique, preparative SFC is becoming increasingly more popular with advances in instrumentation, software and chemistry.

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