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Ben·e·dict-Roth ap·pa·ra·tus(ben'ĕ-dikt roth),
a device employed to measure the amount of oxygen used in quiet breathing in the basal state for the estimation of the basal metabolic rate; the subject rebreathes oxygen through soda lime from a recording spirometer.
Benedict,Francis Gano, U.S. chemist, 1870-1957.
Benedict-Roth apparatus - a device to measure the amount of oxygen utilized in quiet breathing for the estimation of the basal metabolic rate.