Contents
Chapter 9 — Chromatographic Troubleshooting 201......
Introduction 202..........................................................
Baseline symptoms 202....................................................
Position 202...........................................................
Wander and drift 203..................................................
Noise 204.............................................................
Spiking 206...........................................................
Retention time symptoms 207..............................................
Retention time drift 207................................................
Retention time wander (reproducibility) 207.............................
Peak symptoms 209.......................................................
No peaks 209..........................................................
Inverted peaks 209....................................................
Extra peaks 209.......................................................
Deformed peaks 211...................................................
Troubleshooting valve systems 214..........................................
Chromatographic symptoms 214........................................
Locating leaks 216........................................................
Pressure check 217........................................................
Electronic pressure control 218.............................................
Safety shutdown 219...................................................
Proper configuration 220...............................................
Switch setting examples 221............................................
Chapter 10 — Test Sample Chromatograms 223........
Test sample chromatograms 225............................................
Index 241.............................................
