Jennifer, Perhaps the SpG should be stated as: mass of object / mass

of displaced water. Density can be expressed in different units like

Gm/CC or Oz/CuIn but SpG is always relative to the density of water.

So the in the metric system, the numbers are the same ie the density

of water is 1 Gm/CC or (8Lb/Gal etc) and the SpG is 1 (the units

cancel out). – Looking forward: Alan Shinn

# Question-difference between density and specific gravity

**Alan_Shinn1**#1