2017-10. All’s Well That Ends Well

In his final column before retirement, John Dolan reminisces about his years as the author of “LC Troubleshooting,” and some of the hcanges that have taken place in liquid chromatography (LC) technology during that time. LCGC 35(10) 746-750 (2017) John W. Dolan *ed. notes: (1) This is John Dolan’s last […]

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2015-12. Detective Work, Part II: Physical Problems with the Column

Particulate matter from the sample or the system can cause havoc in the chromatogram. LCGC 33(12) 894-899 (2015) John W. Dolan Errata: Note that there was a transposition error in this and two associated articles. In the referenced table, the words “Symptom” and “Cause” have been reversed. That is, “Cause” […]

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2015-11. Detective Work, Part I: Simplify the Choices

How to get started in the process of identifying the problem source for column-related problems. LCGC 33(11) 844-847 (2015) John W. Dolan Errata: Note that there was a transposition error in this and two associated articles. In the referenced table, the words “Symptom” and “Cause” have been reversed. That is, […]

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2015-9. LC Column Problems Everywhere

No matter where you live or who you work for, you’re likely to encounter one or more of these liquid chromatography (LC) column problems at some point. LCGC 33(9) 694-699 (2015) John W. Dolan

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2012-8. Questions from Afar

Retention-time drift, temperature control, and broad peaks from a new column are the topics in this month’s discussion. LCGC 30(8) 634-636 (2012) John W. Dolan

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2011-10. Column Triage

How do you react to symptoms that indicate your liquid chromatography column has major problems? LCGC 29(10) 908-912 (2011) John W. Dolan

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