Agilent Technologies 1100 Series User Manual page 77

Using the Autosampler
Entering Settings
More specific settings (draw speed, eject speed, draw position offset) can be entered
using the More... button [F1] and choosing the Settings option.
Setting the Injection Mode
There are two modes which can be set:
• Standard
without pre-defined needle wash,
with pre-defined needle wash (wash vial number can be set).
If the pre-defined needle wash function is enabled, the needle moves prior to the
injection (with reagent in the needle) into the wash vial to remove sample
deposits from the needle outside. This prevents sample stay in the seat and create
memory effects on the next injection cycle.
• Injector Program
See "Running an Injector Program" on page 129.
Optimizing Autosampler Performance
There are two optimization modes available on the autosampler (called prefetch and
overlap). Both options allow to shorten the analysis time for operations that require
a high sample throughput.
The optimization modes can be chosen from the Analysis screen:
1 Press the Settings button [F1].
2 Choose the Autosampler from the list.
3 Select the More... button [F1].
4 Choose Optimization from the list.
5 In the appearing window the optimization mode can be chosen from the list box as
well as a delay time.
If you choose the Prefetch Sample Vial option, the next vial (for multiple injections
the same vial) will be moved close to the injection port after the specified elapsed
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