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LCGC North America is devoted to chromatography and the separation sciences. LC*GC North America offers analytical scientists practical information, supplying accurate and reliable peer-reviewed articles.

Regular columns include LC troubleshooting, GC connections, sample preparation perspectives, questions on quality, coupling matters and CE currents.

The unbiased, peer-reviewed magazine for chromatographers and analytical scientists offering practical insights on separations methods, applications and techniques.

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Read the Digital Issue: LCGC North America, September 2009

CONTENTS
COLUMN WATCH
Highlights of HPLC 2009
Ronald E. Majors
Ron Majors provides first-hand coverage of some of the technology and application advances reported at HPLC 2009.

LC TROUBLESHOOTING
Method or System?
John W. Dolan
This month’s LC Troubleshooting discusses the type of problems one can encounter when using methods supplied to us by others.

GC CONNECTIONS
Get Involved!
John V. Hinshaw
John Hinshaw takes a break from the technical and visits a number of chromatography forums and discussion groups.

DIRECTIONS IN DISCOVERY
Standardizing Proteomics: Results of a Collaborative Study
Tim Wehr
A multilaboratory collaborative study organized by the Human Proteome Organization demonstrated that participating laboratories had difficulty in identifying components of a simple protein mixture.

HISTORY OF CHROMATOGRAPHY
My 50+ Years in Chromatography
Leslie Ettre
The former “Milestones in Chromatography” editor returns to give readers the story of his time in the field of chromatography.

Asymmetrical Flow FFF as an Analytical Tool for the Investigation of the Physical Stability of Virus-Like Particles
R. Lang, L. Vogt, A. Zürcher, and G. Winter
In this study, the rational development of asymmetrical flow field-flow fractionation methods (AF4) for the investigation of VLP is illustrated.

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Chromatographyonline.com is the premier global resource for unbiased, peer-reviewed technical information on the field of chromatography and the separation sciences.

Combining all of the resources from the regional editions (LCGC North America, LCGC Europe, and LCGC Asia-Pacific) of our award winning magazines, we deliver practical, nuts-and-bolts information to help our audience of scientists and lab managers become more proficient in the use of chromatographic techniques and instrumentation, thereby making laboratories more productive and businesses around the world more successful.

FROM THE EDITOR
Everything is Cyclical

There is an old saying regarding the world of fashion that says if you wait long enough, everything comes back into style eventually. While this saying may have provided the necessary excuse for many people (myself included) to avoid throwing away favorite old articles of clothing, the underlying truth that everything is cyclical cannot be denied, and this certainly holds just as true for the field of chromatography as it does for any other field.

Earlier in the year, the stock market was at its lowest point in over ten years, and many feared the recession might even deepen into a depression. At the same time, the acetonitrile shortage was at its peak, with many laboratories feeling the crunch of this unexpected rise in the cost of solvent. Things looked grim, and the outlook was dark to say the least. ...

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