Using a cuvette 2-21
The following table identifies each LED mode with its corresponding detector
lamp state.
Shutting down the detector
To shut down the detector:
1. If the mobile phase contains buffers, set the solvent delivery system or
pump to deliver 10 mL of HPLC-grade water. Otherwise, set the solvent
delivery system or pump to deliver 10 mL of degassed methanol.
2. Press the Off/On ( ) switch on the front panel of the detector to the
Off ( ) position.
Using a cuvette
The detector cuvette option allows for ease of use in:
• Sample handling
• Instrument verification and qualification
The detector uses a standard 10-mm path length spectrophotometric cell
(quartz cuvette). You insert the cuvette with a frosted side facing up in the
cuvette holder, which you then place in the detector flow cell assembly.
Lamp LED indications
LED mode and color Description
Unlit Indicates the detector lamp is extinguished.
Constant green Indicates the detector lamp is ignited.
Flashing green Indicates the detector is initializing or verifying
calibration.
Flashing red Indicates that an error stopped the detector.
Refer to the console for information regarding the
error.
Constant red Indicates a detector failure that prevents further
operation. Power-off the detector, and then
power-on. If the LED is still steady red, contact
your Waters service representative.
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