Ronald E. Majors
Ronald E. Majors

Ron Majors, editor of "Column Watch" and "Sample Prep Perspectives," has been with LCGC North America for over 26 years. Currently a senior scientist with Agilent Technologies, Wilmington, Delaware, Ron is known industry-wide as one of the premier chromatography experts in the field. He is also a member of LCGC's editorial advisory board.

John Dolan

"LC Troubleshooting" Editor John Dolan has been writing "LC Troubleshooting" for LCGC for more than 25 years. One of the industry's most respected professionals, John is currently the Vice President of and a principal instructor for LC Resources, Walnut Creek, California. He is also a member of LCGC's editorial advisory board. Direct correspondence about this column via e-mail to

LCGC E-Books

LCGC E-Books, LCGC eBooks-05-01-2017, Volume e5, Issue 2

Click to view a chart covering possible causes and solutions for changing retention times, decreasing retention times, increasing retention times, and retention beyond total permeation volume (size exclusion chromatography).


View other charts from LCGC's eBook Guide to LC Troubleshooting.