Question

What is specific gravity
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Answer 1

The term “Specific Gravity” (SG) is used to define the weight or density of a liquid as compared to the density of an equal volume of water at a specified temperature. The temperature used for measurement is usually 39.2oF (4oC), because this temperature allows water to assume its maximum density.

Answer 2

Specific gravity is the ratio of the density of a reference substance ; equivalent it is the mass of a reference substance for the same given volume