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API gravity = γAPI

Created by Arthur Aslanyan (Nafta College), last modified on Jan 25, 2023

Measure of the fluid density of a substance with specific gravity $\begin{array}{l}SG\end{array}$ at reference (usually STP) conditions:

(1)	$\begin{array}{l}\displaystyle \gamma_{API} \, [{\rm ^\circ API}] = \frac{141.5}{\rm SG} - 131.5\end{array}$

This is a popular density unit for crude oil and gas condensate.

See also

Natural Science / Physics / Fluid density / Specific gravity

[ Oil specific gravity (γo) ][ Gas specific gravity (γ_g) ]

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