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Bed Volume (BV)

A term used as a measurement of a volume of incoming (feedwater) in gallons or liters, equal to (in cubic feet or liters) the volume of ion exchange or filter media product in a tank including voids. Example: one bed volume for a cubic foot bed would be equal to 7.48 U.S. gallons or 28.3 liters. This term is used mainly in laboratory and in experimental testing rather than in equipment capacity ratings.