Decagon Devices AquaLab 4TE Operator's Manual page 67

When to Adjust for Linear Off set
Reference methods can diff er between labs, so it is a good idea
to check for a linear off set upon receipt of a new isotherm model
from Decagon. In addition, the linear off set should be adjusted if
moisture contents being calculated by the AquaLab Duo instru-
ment are consistently higher or lower for a product than your refer-
ence method values over several samples.
How to Adjust for Linear Off set or
Create a New Model Based Off an Old Model
1. For the product whose model is to be off set, collect 3 subsam-
ples for analysis.
2. Use 2 of the subsamples to run duplicate reference method
moisture contents and determine the average moisture content.
3. Once you've obtained a reference moisture content, navigate
to the calibration screen in the Confi guration menu of the
AquaLab Duo Moisture Analyzer and select %Moisture from
the list of calibration types.
4. Select Edit to edit and replace an existing model. Select New if
you would like to create a new off set model with this calibra-
10. Duo Operation (Optional)
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AquaLab