Thermo Scientific AI 1310 User Manual page 86

4
AI 1310/AS 1310 Control
Control Through the Chromatography Data System
62 AI 1310/AS 1310 Sampling System - User Guide
Sampling Depth — Choose the position of the needle in the vial from which the aliquot is
drawn. The options are Bottom (default value), or Center.
• When Bottom is set the syringe needle penetrates up to the bottom of the vial.
• When Center is set, the syringe needle penetrates up to the half of the vial.
Injection Depth — Determines the penetration depth of the syringe needle into the vial. The
options are Standard or Minimum (cold needle technique for TRACE 1300/1310 GC and
TRACE GC Ultra). If the pre and post -injection dwell times are set to zero, the sampler
defaults to the Minimum setting.
• When Standard is set (default value), the syringe needle penetrates into the injector
up the maximum depth limit.
• When Minimum is set, the syringe needle penetrates into the injector up to go
beyond the septum only.
Pre-injection Dwell Time — The time in seconds the syringe needle is held in the inlet before
the injection of sample. When you specify a delay of more than a few seconds, the needle
preheats, which makes a Hot Needle Injection. Enter a value in the range 0-63 seconds.
Post-injection Dwell Time — The time in seconds the syringe needle is held in the after the
injection of sample. A delay of more than a few seconds will heat the needle with the possible
effect of driving those heavier analytes that have condensed in the needle out. A solvent flush
technique may work better. Enter a value in the range 0-63 seconds.
Pre-Injection — Choose a solvent from the drop-down list. The options are: A, B, C, D, A+B
and C+D. These settings correspond to the vials in the Washing and Waste tray.
Cycles — This is the number of times that the syringe is rinsed with the sample prior to
injection. Select a value in the range 1-15.
Rinse— This is the number of times that the syringe is washed with the sample prior to
injection. Select a value in the range 1-15.
Solvent — Choose a solvent from the drop-down list. The options are: A, B, C, D, A+B and
C+D. These settings correspond to the vials in the Washing and Waste tray.
Cycles — Select the number of times the solvent is cycled through the syringe. The range is
1-15.
Commands
The following commands are available:
Get Method from Sampler — Transfer the AI 1310/AS 1310 current method to the GC.
Send Method to Sampler — Transfers the method from the computer to the a AI 1310/AS
1310 and makes the method active.
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