4.11 Second Uv Monitor - GE AKTA avant User Manual

4.11 Second UV monitor

Introduction
It is possible to use up to two UV monitors simultaneously, a UV monitor U9-L can be
installed alongside the standard UV monitor U9-M. The second UV monitor could for
example be used to enable the user to cover a larger dynamic range in UV absorbance
measurements by using different cell lengths. The two monitors should then be placed
as close as possible to each other. The second monitor could also be used to monitor
the absorbance of incoming feed and is then placed in the flow path just before the
column valve.
Function of UV monitor U9-L
The UV monitor U9-L continuously measures the UV absorbance at the fixed wavelength
of 280 nm.
It is not possible to vary the wavelength, or turn on or off the U9-L monitor. This is
therefore not shown in the Phase Properties pane in Method Editor. However, in a pre-
defined method the second UV monitor will be auto zeroed at the same time as the U9-M
monitor.
ÄKTA avant User Manual 29035184 AE
4 Optional instrument modules

4.11 Second UV monitor

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