John Dolan has been writing "LC Troubleshooting" for 

 for over 20 years. One of the industry's most respected professionals, John is currently the Vice President of BASi Northwest Laboratory, McMinnville, Oregon and a principal instructor for LC Resources, Walnut Creek, California. He is also a member of 

Liquid Chromatography (LC/HPLC)

HPLC

LCGC Europe-06-01-2005

LCGC Europe

This month, John Dolan offers some suggestions for distinguishing between overload and the presence of a minor peak.

Overload or Minor Peak