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Schematic drawing of a hydrometer. The lower the density of the fluid, the deeper the weighted float B sinks. The depth is read off the scale A.. A hydrometer or lactometer is an instrument used for measuring density or relative density of liquids based on the concept of buoyancy.
The Baumé scale is a pair of hydrometer scales developed by French pharmacist Antoine Baumé in 1768 to measure density of various liquids. The unit of the Baumé scale has been notated variously as degrees Baumé, B°, Bé° and simply Baumé (the accent is not always present).
hydrometer: specific gravity of liquids (density of liquids) hygrometer: humidity inclinometer: angle of a slope inkometer: ink interferometer: wave interference infrared thermometer: heat radiated katharometer: composition of gases lactometer: specific gravity of milk light meter: light (in photography) linear position transducer: speed of ...
A density meter does not measure the specific gravity of a sample directly. However, the specific gravity can be inferred from a density meter. The specific gravity is defined as the density of a sample compared to the density of a reference. The reference density is typically of that of water. The specific gravity is found by the following ...
The final gravity is the specific gravity measured at the completion of fermentation. The apparent extract, denoted , is the °P obtained by inserting the FG into the formulas or tables in the Plato scale article. The use of "apparent" here is not to be confused with the use of that term to describe specific gravity readings which have not been ...
Hydrostatic pressure, also gravity pressure or gravity pressure, occurs within a stationary fluid. It is caused by gravity and depends on the density and height of the liquid column. The mass of the fluid does not matter - see also hydrostatic paradox - i. e. not the total weight of the liquid in the container, but the filling level is decisive.
A salinometer. A salinometer is a device designed to measure the salinity, or dissolved salt content, of a solution.. Since the salinity affects both the electrical conductivity and the specific gravity of a solution, a salinometer often consist of an ec meter or hydrometer and some means of converting those readings to a salinity reading.
However it cannot be said they measure specific gravity (disregarding the gradation) since specific gravity is based on the density of a reference of which any given hydrometer is not unless it is designated a reference such as the kilogram mass. It should be worded clearly as to differentiate relative density as used in the principle and in ...