3 WATER ACTIVITY THEORY AquaLab
determine moisture content and water activity simultaneously. This
instrument is called the Series 4TE DUO.
We cannot overemphasize the importance of the concept of water
activity for foods, pharmaceuticals, and cosmetics. Water activity
is a measure of the energy status of the water in a system. More
importantly, the usefulness of water activity in relation to microbial
growth, chemical reactivity, and stability over water content has been
shown.
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