The specific gravity of a sugar solution can be used to estimate its sugar content described by degrees Brix or degrees Plato.
1 degrees Brix (1°Bx) = 1 gram of sucrose in an aqueous solution weighing 100 g at 20°C
1 degrees Plato (1°P) is similar but slightly more accurate.
degrees Brix for a solution up to 40°Bx =
= (((((182.4601 * (SG))-775.6821)*(SG))+1262.7794)*(SG))-669.5622
or
= 261.3 - (261.3 / (specific gravity))
degrees Plato for a solution =
= ((specific gravity) - 1) * (463 - (205 * (specific gravity)) =
= (-205 * ((specific gravity)^2)) + (668 * (specific gravity)) - 463
or
= (-205 * ((specific gravity)^2)) + (668 * (specific gravity)) - 463
