Inlets - Agilent Technologies 7890 Series Advanced Operation Manual

Agilent 7890 Series Gas Chromatograph
Advanced Operation Manual
3

Inlets

Using Hydrogen 35
Inlet Overview 36
Carrier Gas Flow Rates
About Gas Saver 38
Pre Run and Prep Run 40
Auto Prep Run 41
About Heaters 42
About the Split/Splitless Inlet
Split/Splitless inlet split mode overview
Split/Splitless inlet splitless mode overview
The S/SL inlet pulsed split and splitless modes
Split/Splitless inlet split mode minimum operating pressures
Selecting the correct S/SL inlet liner
Vapor Volume Calculator
Selecting parameters for the S/SL splitless mode
About the Multimode Inlet
Septum tightening (MMI)
Heating the MMI 56
Cooling the MMI 56
MMI split mode minimum operating pressures
Selecting the correct MMI liner
Vapor Volume Calculator
MMI split and pulsed split modes
MMI splitless and pulsed splitless modes
MMI solvent vent mode
MMI Direct Mode 78
To develop a MMI method that uses large volume injection
Multiple injections with the MMI
About the Cool On-Column Inlet
Retention gaps 93
COC inlet temperature control
Setting COC inlet flows/pressures
About the PTV Inlet 96
PTV sampling heads
Heating the PTV inlet
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