Fourth edition. ISO 2781 was prepared by Technical Committee ISO/TC 45, Rubber and rubber products, Subcommittee SC 2, Testing and analysis. This fourth edition cancels and replaces the third edition (ISO 2781:1988), which has been technically revised. It also incorporates the Technical Corrigendum ISO 2781:1988/Cor.1:1996. — 12 p.
This International Standard specifies two methods of test for the determination of the density of solid vulcanized and thermoplastic rubbers.
Such determinations are of importance in the control of the quality of a rubber compound and in the calculation of the mass of rubber required to produce a given volume of material.
This International Standard does not cover the determination of the relative density of rubber, which is the ratio of the mass of a given volume of rubber to the mass of an equal volume of pure water at a given temperature.