Dry basis
moisture content (designated Md
in the text) is described by the percentage equivalent of the ratio of
the weight of water (WW)
to the weight of the dry matter (Wd).
Note that
dry weight moisture content can range from 0 to very large percentages.
Dry basis
moisture is most commonly used for describing moisture changes during drying.
When a sample loses or gains moisture, the change in the dry basis moisture
is linearly related to the weight loss or gain.