AquaLab 10 DUO OPERATION (OPTIONAL)
10 DUO Operation (Optional)
Previously, measuring moisture content and water activity required
different instruments. Now it is possible to determine both moisture
content and water activity with one machine. The Series 4TE and
4TEV can be upgraded to Series 4TE DUO and 4TEV to a 4TEV
DUO, both of which display moisture content simultaneously with
water activity.
To calculate moisture content using water activity requires an un-
derstanding of the relationship between the two parameters. This
relationship, referred to as the moisture sorption isotherm, is com-
plex and unique to each product type. Customers can use the prod-
uct isotherm to calculate moisture content based on a water activity
measurement. This is most easily accomplished using a model that
characterizes the isotherm. For additional information about sorp-
tion isotherms and models, please refer to Section 3.
The DUO generates water activity values just as a Series 4TE or
4TEV, but then it uses preloaded product specific isotherm models
to calculate moisture content and present it on the screen with the
water activity.
For information about upgrading your Series 4TE/4TEV to a Se-
ries 4TE DUO or 4TEV DUO, please contact Decagon Devices.
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