This Standard describes a method for determining the density of solid plastics. It is based on observing the level to which a test specimen sinks in a liquid column exhibiting a density-gradient, in comparison with standards of known density.
SS 323 Pt.A2-1987 history
1987SS 323 Pt.A2-1987 Methods Of Test For Flexible Plastic Packaging Materials Part A2 : Determination Of Density By The Density-Gradient Technique