1200 Series DAD and MWD User Manual 51
Using the Detector 4
5 Purge the pump. For more information see “Priming and Purging the
System” on page 44.
6 Allow the detector to warm up of at least 60 minutes to provide a stable
baseline (see example in
Figure 10 and Table 8).
.
NOTE
For reproducible chromatography, the detector and lamp should be on for at least one hour.
Otherwise the detector baseline may still drift (depending on the environment).
Figure 10 Stabilization of Baseline (both lamps turned on at the same time)
Tab le 8 Baseline drift after lamp turn on (example from Figure 10)
Time [minutes] Drift [mAU/hr]
17 - 20 2.6
27 - 30 0.8
37 - 40 0.4
47 - 50 0.2
57 - 60 < 0.2
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