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Baum, Scale. A hydrometer (q.v.) scale so calibrated that the specific gravity of a solution can readily be established by suspending the hydrometer instrument (consisting of a glass stem weighted at one end to make it float upright) in the solution (q.v.). The specific gravity values are calculated by means of standard conversion formulas or tables from the depth to which the instrument sinks. The procedure is normally used to determine the solids content of corn syrups (q.v.) and similar liquid sweeteners.