Wet and Dry Basis Moisture Content

​
convert moisture content from
wet to dry basis
dry to wet basis
moisture
25.
content (% wet weight basis)
moisture
25.
content (g/100 g dry matter)
axes maxima
moisture
50.
content maximum (% wet weight basis)
moisture
100.
content maximum (g/100 g dry matter)
In most applications, moisture content is expressed on a wet basis, that is, as the water mass in grams per 100 grams of the total mass, which includes the water. In drying and humidification calculations, however, the moisture content is frequently expressed on a dry basis, that is, as the water mass in grams per 100 grams of dry matter. This Demonstration plots the relationship between the two moisture content measures and converts entries expressed on a wet basis to a dry basis and vice versa.

Details

Snapshot 1: conversion of moisture content on a wet basis to a dry basis in a high moisture food
Snapshot 2: conversion of moisture content on a dry basis to a wet basis in a low moisture food
Snapshot 3: conversion of moisture content on a dry basis to a wet basis in a high moisture food
The conversion of percentage moisture on a wet basis to a dry basis is calculated with the formula
M
dry
=100
M
wet
/(100-
M
wet
)
, where
M
dry
is the moisture content on a dry basis in g
H
2
O
/100 g dry matter and
M
wet
is the moisture content on a wet basis, that is, g
H
2
O
/100 g total mass. The conversion of moisture content on a dry basis to a wet basis is calculated with the formula
M
wet
=100
M
dry
100+
M
dry

.
Choose the conversion type
M
wet
to
M
dry
or
M
dry
to
M
wet
with a setter bar and select the quantity to be converted,
M
wet
or
M
dry
, with a slider. The numerical value of the converted moisture content is displayed above a plot of the relationship between
M
wet
and
M
dry
, or
M
dry
and
M
wet
, on which the chosen quantity appears as a moving dot. You can also set the axes maxima of the plot with sliders.

References

[1] C. E. Nyquist and R. L. Stroshine. "Relationship Between Wet Basis and Dry Basis Moisture Content." (Dec 5, 2014) engineering.purdue.edu/~abe305/moisture/html/page10.htm.

External Links

Dehydration by a Desiccant
Equilibrium Water Activity of Binary Dry Mixtures
Comparison of Food Moisture Sorption Isotherm Equations

Permanent Citation

Mark D. Normand, Micha Peleg
​
​"Wet and Dry Basis Moisture Content"​
​http://demonstrations.wolfram.com/WetAndDryBasisMoistureContent/​
​Wolfram Demonstrations Project​
​Published: December 8, 2014