Density Immersion Method – Specific Gravity

Density Immersion Method – Specific Gravity ( Relative Density) is performed in a controlled environment 23 degree +/- 2 degrees where the humidity is not controlled.

The most common method for the determination of the density of solid plastics is the immersion method. A test specimen is weighed and recorded. It is then immersed in a liquid and its apparent mass upon immersion is recorded. The specific gravity (mass ratio) and the density (mass ratio x the density of the liquid) is then calculated.  The immersion liquid can be either distilled water (Method A) or a liquid lighter than water (Method B) such as ethanol, IPA etc.

Impact Solutions are accredited to conduct ISO 1183-1:2019 (Method A) and ASTM D792-19 (Method A) to measure specific gravity.