GPP
Grains Per Pound
a way to measure water vapor in the air. Also know as humidity ratio. The weight of water in a given weight of air ( a pound of dry air) information needed when drying a room that has been flooded.
a way to measure water vapor in the air. Also know as humidity ratio. The weight of water in a given weight of air ( a pound of dry air) information needed when drying a room that has been flooded.
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