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Milk Powder -

Powdered milk is made by the removal of most of the water from milk so that the milk solids are accompanied by not more than 5%, perhaps as little as 2% -moisture. Water is removed in two stages.

In the first stage the milk is concentrated by vacuum evaporation to about one-third of its original value. In the second stage the milk is dried, usually on a roll drier or in a spray drier.