ISO 2930:2024

International Standard   Current Edition · Approved on 19 July 2024

Raw, natural rubber — Determination of the plasticity retention index (PRI)

ISO 2930:2024 Files

English 9 Pages
Current Edition
31.01 OMR

ISO 2930:2024 Scope

This document specifies a method to determine the plasticity retention index (PRI) of raw natural rubber.

The PRI is a measure of the resistance of raw natural rubber to thermal oxidation. A high resistance to thermal oxidation is shown as a high value of the index. PRI is not an absolute value and cannot give an absolute classification of plasticity number of different natural rubber after oxidation.

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