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Function of UV monitor U9-L
The UV monitor U9-L 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.
Location and illustration of UV monitor U9-L
The illustration below shows the recommended location of UV monitor U9-L, together with a detailed
view of the monitor and detector. The UV monitor U9-L requires that the Multi-module panel is installed,
see Example of a typical configuration of the wet side, on page 16. The UV monitor can also be installed
in an Extension box, see Extension box, on page 86.
1 2 3
4 5
Description Part
Inlet 1
UV monitor U9-L 2
UV flow cell. Two different path lengths are available:
2 mm (default) and 5 mm 3
Outlet 4
UV detector 5
Using two UV monitors
It is possible to use two UV monitors in ÄKTA pure, in two combinations. The configuration is defined
by the module's Node ID.
• UV monitor U9-M together with UV monitor U9-L, 2nd
• UV monitor U9-L together with UV monitor U9-L, 2nd
ÄKTA pure User Manual 29119969 AB 71
2 The ÄKTA pure instrument
2.4 Instrument modules
2.4.13 UV monitors