User guide

8 Advanced User Guide
Multiple injections with the MMI 213
About the Packed Column Inlet 219
Setting parameters 220
About the Cool On-Column Inlet 222
Setup modes of the COC inlet 223
Retention gaps 223
COC inlet temperature control 223
Setting COC inlet flows/pressures 224
Setting COC inlet parameters 225
About the PTV Inlet 226
PTV sampling heads 226
Heating the PTV inlet 227
Cooling the PTV inlet 228
PTV inlet split and pulsed split modes 228
PTV inlet splitless and pulsed splitless modes 232
PTV inlet solvent vent mode 239
To develop a PTV method that uses large volume injection 247
Multiple injections with the PTV inlet 250
About the Volatiles Interface 255
VI operating modes 256
About the VI split mode 257
About the VI splitless mode 261
About the VI direct mode 266
Preparing the Interface for Direct Sample Introduction 269
Disconnecting the split vent line 269
Configuring for direct mode 271
VI direct mode setpoint dependencies 271
VI direct mode initial values 271
Setting parameters for the VI direct mode 272
9 Columns and Oven
About the Oven 276
Oven safety 276
Configuring the Oven 277
Cryogenic Operation 278
Cryogenic setpoints 278
About Oven Temperature Programming 280
Programming setpoints 280
Post run 281
Oven ramp rates 281