Zero Adjustment - wtw photoLab 6100 VIS Operating Manual

®
photoLab 6100 VIS
Factory zero
adjustment for
concentration
measurements
Zero adjustment for
absorbance
measurements
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4.4

Zero adjustment

A valid zero adjustment is required for the calculation of measured values in
the modes, Concentration, Absorbance / % Transmission, Special / Multi
wavelengths and Kinetics. With a zero adjustment, the absorbance of a cell
filled with distilled water ("zero cell") is measured and stored.
For all measurements with WTW test sets (Concentration mode), a factory
zero adjustment is available in the delivery condition. We recommend replac-
ing it with a zero adjustment of your own. If a zero adjustment exists already
for a method, the date and time of the last zero adjustment are displayed in
the top right area of the display.
Concentration
Please select method for measuring or insert
a barcoded cell or insert AutoSelector.
Setup
Method list Last method
In the Absorbance mode, the zero adjustment has to be carried out sepa-
rately for each cell type and each used wavelength. If a zero adjustment
exists already for the inserted cell type at the selected wavelength, the date
and time of the last zero adjustment are displayed in the top right area of the
display.
Absorbance
To start measurement, insert cell or press <START/
ENTER>
525 nm
Setup Wavelength Transmission
If no zero adjustment is available, the photometer will prompt you to carry out
a zero adjustment.
Note
The cells must be absolutely clean and free of scratches.
16.04.07 9:52
[ZERO 11.11.2010 11:11]
New Method
16.04.07 9:52
[ZERO 11.11.2010 11:11]
10 mm
Reference
Operation
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