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Tag: estimates


2017-4. Count the Cost, Part II: Increasing Resolution by Increasing Retention

April 1, 2017

We’ll learn how to find the “sweet spot” in terms of retention for a liquid chromatography separation as well as how much retention change can be expected for a selected change in mobile-phase percent organic or column temperature. LCGC 35(4) 240-245 (2017) John W. Dolan See also 2017-3 and 2017-5 […]

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2017-3. Count the Cost, Part I: Increasing Resolution by Increasing Column Efficiency

March 1, 2017

When considering column efficiency, more is not always better. We look at some ways to quickly estimate the effects of changes in column length and particle diameter rather than trying the experiments in the laboratory. LCGC 35(3) 170-173 (2017) John W. Dolan See also 2017-4 and 2017-5 for remaining articles […]

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2011-2. A Picture is Worth a Thousand Words

February 1, 2011

Apply the fundamentals to your problem and the cause may become obvious. Keywords: LCGC 29(2) 136-142 (2011) Kasper Pedersen and John W. Dolan

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2004-11. My Favorite Shortcuts

November 1, 2004

Simple ways to estimate chromatographic changes. LCGC 22(11) 1074-1080 (2004) John W. Dolan

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1987-12. Shortcuts for LC Measurements

December 1, 1987

LCGC 5(12) 1030-1032 (1987) John W. Dolan

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