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API gravity

Created by Arthur Aslanyan (Nafta College), last modified on Feb 04, 2019

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Measure of the fluid density of a substance with specific gravity $\begin{array}{l}SG\end{array}$ :

(1)	$\begin{array}{l}\displaystyle {\rm API} = \frac{141.5}{\rm SG} - 131.5\end{array}$

This is a popular density unit for crude oils.

See also

Natural Science / Physics / Fluid density

[ Specific gravity ]

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