![Agilent Technologies 1290 Infinity II 2D-LC Solution User Manual Download Page 378](http://html1.mh-extra.com/html/agilent-technologies/1290-infinity-ii-2d-lc-solution/1290-infinity-ii-2d-lc-solution_user-manual_2867575378.webp)
14
Theoretical Background
Solvent Elution Modes
2D-LC User Guide
378
All modes are easily available with the Agilent 2D-LC Acquisition software.
Each mode has advantages and disadvantages. No single mode is superior in all
applications of 2D-LC.
Table 46
Different elution modes in the
2
D (pros and conts)
Criterion
Gradient/Shifted gradient
Isocratic/Advancing isocratic
Peak capacity
Superior
Inferior
Diversity of samples
(complex samples)
Superior
Inferior
Baseline performance
(sensitivity
Inferior
(baseline drift caused by solvent
gradient)
Superior
Pressure stress
(column lifetime!)
Inferior
(large changes within every 2nd
dimension gradient
Superior
(no pressure changes with
isocratic, gradually changing with
advancing isocratic)