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Idiomas disponibles
Operation
Validity of the zero
adjustment
When to repeat the
zero adjustment?
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The data of the zero adjustment is stored in the photometer separately for
each cell type. As long as the data is valid, it is automatically used again after
a temporary change to a different cell type. The validity depends on the
respective mode:
Mode
Concentration (permanently
programmed methods)
Absorbance / % Transmission
Concentration (user-defined
methods) and
Multi wavelengths
Kinetics
* After the wavelength or method respectively was temporarily exited the
photometer displays that a zero adjustment is available and the time it was
carried out. You can then decide whether to use this zero adjustment or carry
out a new zero adjustment.
We recommend to repeat the zero adjustment in the following cases:
If the photometer was subject to mechanical stress such as strong shock
or transport
If the ambient temperature changed by more than 5 °C since the last zero
adjustment
At least once per week
If a new cell type (different manufacturer, different glass type is used)
Basically each time you want to measure with the highest possible
accuracy.
4.4
Measuring in Concentration mode
4.4.1
Measuring cell tests with barcode
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Concentration
Validity of the zero adjustment
Till the next zero adjustment
Till the next zero adjustment with the
same wavelength *
Till the next zero adjustment for the same
method *
Till another kinetic profile is loaded
Till the Kinetics mode is exited or the
photometer is switched off
®
photoLab
6600 UV-VIS
ba75850e04
02/2011
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