Specific gravity of any elastometer is of considerable importance for its identification. Besides it can also be used for providing a rough assessment of its physical properties. It can also be used for finding if the sample and the products are prepared from the same compound or not. A specific gravity balance may be used to find the specific gravity of rubber and other elastomers directly without involving any calculations. The time taken to find the specific gravity with the help of this balance is about a half a minute only.

Specific gravity of any elastometer is of considerable importance for its identification. Besides it can also be used for providing a rough assessment of its physical properties. It can also be used for finding if the sample and the products are prepared from the same compound or not. A specific gravity balance may be used to find the specific gravity of rubber and other elastomers directly without involving any calculations. The time taken to find the specific gravity with the help of this balance is about a half a minute only.

Ranges: 0.9 to 3.0 & 0.2 to 2.0
This is a direct reading specific gravity balance eliminating calculation . Test piece between 5 & 12 Gms can be used
The apparatus consists of a rigid aluminum plate standing vertically on a heavy cast base . The S.G scale is printed on the vertical plate and a pointer is pivoted on fine bearing to register the specific gravity on the scale.

The test piece is suspended on needle from  an arm at one end of the pointer which is initially set to A with test piece in air by means of two sliding balance weights.

The test piece is then Immersed in water contained in a beaker . The reading  indicated on the scale by moving pointer is the specific gravity of the sample

The ranges of the specific gravity balance is: 0.9 to 3.0 & 0.2 to 2.0