Display
Action
Step
Press OK.
2
Select sub menu Set Wavelength λ1.
3
Press OK.
4
Set the value.
5
Press OK.
6
The next wavelength λ2 is now shown. Set the value
or turn the wavelength off, by turning the dial counter
clockwise until the value passes through 190 nm. If
only one wavelength is to be used, λ2 and λ3 should
be set to off. Press OK.
7
The first wavelength λ1 can never be set to off.
Repeat step 4 in the menu Set Wavelength λ3.
8
Press ESC to return to the main operating menu.
9
Autozero
The autozero function sets the detected absorbance to zero when the OK button is
pressed. All three wavelengths are autozeroed. Autozero is recommended after wave-
length changes in a method and before the sample is injected.
Display
Action
Step
Select main menu Autozero.
1
Press OK. The normal absorbance value display is
then shown.
2
Monitor UV-900 Operating Instructions 28962214 AD
47
5 Operation
5.3 Menu selection and settings
