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April 2015

How to Use a Hydrometer

Tuesday, April 7, 2015

A hydrometer is an instrument used to measure specific gravity or relative density of liquids. It takes the form of cylindrical glass or plastic with a bulb-shaped end. A printed scale calibrated to a specific gravity can be found on its stem while the end is weighted with lead shot or steel shot to keep the hydrometer upright in liquid.