Use the Fraction Preview screen to test the fraction collection parameters against an example signal. You can also use the Fraction Preview to optimize the fraction collection parameters interactively.
| The run time for a system with a fraction collector must be extended by the delay time due to the delay volume, to ensure the complete collection of all compounds. The run time is calculated as: Run time = End of last peak + delay time where delay time = delay volume/flow rate |
Click to display a file selection dialog box that allows you to select a signal that represents the sample for fraction collection, for example from a test run.
Use the cursor selection tools to zoom in or out, and set thresholds, upslope and downslope values in the Fraction Preview. Select the appropriate tool and click at the appropriate position in the signal. The value at the selected position is calculated from the signal and transferred into the Peak Detector table.