Agilent Technologies 8453 Operator's Manual page 407

6
Peak Identification
Absolute Retention/Migration Time
The default values for these windows are entered in the Calibration Settings
dialog box. The width on either side of the retention/migration time that
defines the peak matching window is the sum of the absolute and percentage
windows.
A window of 5 % means the peak must have a retention/migration time
between less than 2.5 % and more than 2.5 % of the calibrated
retention/migration time for that peak. For example, a peak with a
retention/migration time of 2.00 in the calibration run must appear between
1.95 and 2.05 minutes in subsequent runs.
For example, an absolute window of 0.20 minutes and a relative window of
10 % gives a retention/migration time window of between 1.80 and 2.20
minutes.
1.80 min = 2.00 min - 0.10 min (0.20 min / 2) - 0.10 min (10 % of 2.00 min).
2.20 min = 200 min + 0.10 min (0.20 min / 2) + 0.10 min (10 % of 2.00 min).
Understanding Your Agilent ChemStation 133