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Fluid Mechanics or Properties - Specific Gravity
Dimensionless ratio of a fluid's density to some standard reference density. For liquids and solids, the reference density is pure water.
SG liquid = ρliquid /ρwater ρwater = 62.4 lb/ft3 @ room temperature
Oils and hydrocarbons have specific gravities less than 1.
Acids, caustics and wastewater sludges have specific gravities greater than 1
Greek symbol: none
Units: none - dimensionless
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