Scanning With The Vwd - Agilent Technologies 1200 Infinity Series User Manual

4
Using the Detector
Special Settings of the Detector

Scanning with the VWD

Access to the scan feature is only possible during run.
N O T E
1 Set up a run.
2 Start a run.
3 While running on the baseline, select from the menu Instrument >
4 When the peak of interest enters the flow cell, stop the flow (set flow
Turning off the pump would stop the run and no access to the sample scan is possible.
N O T E
5 Select from the menu Instrument > More VWD > Sample Scan.
74
More VWD > Blank Scan.
A background scan is stored in the memory.
rate to zero or open the purge valve) and wait a few moments to
stabilize the concentration.
A sample scan is taken in the range defined under
page 76 and the Online Spectra window (see
page 73) displays the result (Sample Scan minus Blank Scan).
• Step 1: Blank Scan: scan of the background (solvent)
is stored in the memory.
• Step 2: Sample Scan: scan of the peak of interest is
taken while the peak stays in the flow cell (stop-flow
condition).
• Online Spectrum: Sample Scan minus Blank Scan.
"Online Spectra"
Agilent 1200 Infinity Series VWD - User Manual
"Special Setpoints" on
on