Running Autosampling 107
4
4.6.5.1 Overview of Auto Transfer
Auto Transfer
Auto Transfer withdraws solutions from a transfer vial, dispenses into the sample vial, and
mixes. You can program up to five transfer vials for each step. After each transfer, you can
program a delay time and a purge.
Auto Transfer is used for applications requiring automatic transfer of derivatizing agents,
standards, or reference peaks.
The Auto Transfer table is saved in permanent memory.
Auto Transfer Sequence
During an Auto Transfer run, the 717plus Autosampler:
• Aspirates an air gap into the needle to prevent diffusion of sample
• Withdraws a transfer solution (specified on the Auto Transfer screen)
• Dispenses the transfer solution into a sample vial (specified on the Auto Run screen)
• Mixes, if specified
• Waits for a delay time, if specified. If a purge is specified (to rinse the needle and
sample loop), the purge begins at the same time as the delay
• Injects the sample/transferred/mixed solution
Section 4.6.5.3,
Example Auto Transfer Run, includes an example of an Auto Transfer run.
4.6.5.2 Programming and Running Auto Transfer
Before Programming
Before programming:
• Place your samples in the carousel, noting each position (usually in sequential order)
• Place your transfer vials in the carousel, noting each position (usually in sequential
order)
• Program the step on the Auto Run screen (Section 4.6.1,
Programming Auto Run)
• Program the step functions for the step (Section 4.6.2,
Programming Step Functions)
Programming Auto Transfer
To program an Auto Transfer routine:
1. From the Edit: Auto Run screen (Figure 4-10
), select a step, then press Step
Function to display the Edit: Step Function screen.
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