1.31 * (kilogram to pound)/(liter to gallon) = pound/gallon
So a specific gravity of 1.31 means a density of about 10.93 pounds per gallon
Re: Covert Gallons of a Chem. into Lbs?
by XLXRider on 10/08/05 at 18:17:38
I love this site because Mr. Fogt always gives explanations of derivations. VERY helpful in understanding the conversion methods used!!! :)
An easier way to convert from specific gravity to lb/gal is to remember that the SpG of water = 1. Water is (roughly) 8.34 lb/gal. So, just multiply the SgG that you're given (1.31 in this case) times 8.34, and you get 10.925 lb/gal, or 10.93... Regards, XLXRider