What should you do if your retention times drop from one injection to the next? A systematic approach to troubleshooting can help to quickly identify the problem source. LCGC 34(4) 254-261 (2016) John W. Dolan
Read More →The refractive index detector can be frustrating to use because of its extreme sensitivity to temperature and other variables. However, it can see things that no other detector can see. LCGC 30(12) 1032-1037 (2012) John W. Dolan Erratum: see 30(10)
Read More →What happens when the same method gives different retention times on different instruments? LCGC 30(4) 312-318 (2012) Justin Chow and John W. Dolan Erratum: (appreared in 30(6)) Equation 4 has a typographical error. It should read: Vm = 0.5 x 10^-3 x L x dc^2
Read More →There’s more to the data than you might expect. LCGC28(4) 292-300 (2010) Jennifer Birchett and John W. Dolan
Read More →What do you do when the sample changes inside the column? LCGC 24(11) 1184-1190 (2006) Frederic Bell and John W. Dolan Erratum: The axes on Figure 1 were mislabeled. The scale for Figure 1a should be 0 – 3.0 AU and 1b should be 0 – 1.4 AU.
Read More →How to make your column last forever. LCGC 23(11) 1174-1181 (2005) John W. Dolan
Read More →Retention time instability creates frustrating problems. LCGC 15(9) 826-830 (1997) John W. Dolan
Read More →LCGC 12(10) 742-746 (1994) Cynthia Seaver, and Paul Sadek The second article in this series appeared in March, 1995, V13(3). Click on 1995-3 The third article in this series appeared in November, 1995, V13(11). Click on 1995-11
Read More →Readers’ Questions LCGC 9(6) 406-408 (1991) John W. Dolan
Read More →LCGC 6(2) 112-116 (1988) John W. Dolan
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