The G4260B ELS detector’s LED intensity can be adjusted to bring the peak response back on-scale. The intensity range can be set between 1 – 100 %, with the default factory setting being 100 %, for maximum sensitivity. The LED setting is stored in memory and is retained even after a power on/off cycle.
This feature is useful for preparative chromatography where samples of high concentration can be analyzed which would otherwise exceed the dynamic range of the detector.
NOTE
The Agilent 1260 Infinity III ELSD (G4260B) performs an automatic autozero (i.e. 10 mV) following an LED change, to keep the signal on-scale.
NOTE
The Agilent 1290 Infinity III ELSD (G7102A) Laser light source does not have power adjustment.
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id: 4344690827