Specific gravity(G is a property of the mineral or not to 500 or 1000 ml rock material forming soil grains same scale] density jar Pycnometer) It is defined as for coarse soils mass of a soil grain 50 ml SG Bottle s mass of an equal volume of water for fine soils Method of measurement For fine soils a 50 ml density bottle may be used; for coarse soils a 500 ml or 1000 ml jar. The jar is weighed empty(Mi). a quantity of dry soil is placed in the jar and the jar weighed(M2 ). The jar is filled with water, air removed by stirring, and weighed again(M3). The jar is emptied, cleaned and refilled with water-and weighed again(Md) Mass of so il Mass of water displaced by soil 2 The range ofGs for common soils is 2.64 to 2.72Specific gravity (Gs ) is a property of the mineral or rock material forming soil grains. It is defined as Method of measurement For fine soils a 50 ml density bottle may be used; for coarse soils a 500 ml or 1000 ml jar. The jar is weighed empty (M1 ). A quantity of dry soil is placed in the jar and the jar weighed (M2 ). The jar is filled with water, air removed by stirring, and weighed again (M3 ). The jar is emptied, cleaned and refilled with water - and weighed again (M4 ). [The range of Gs for common soils is 2.64 to 2.72]