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prSRPS ISO 2930:2025

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

General information

10.99     Jan 1, 2025

ISS

G045

International Standard

83.040.10  

English  

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.

Life cycle

PREVIOUSLY

PUBLISHED
SRPS ISO 2930:2019

NOW

PROJECT
prSRPS ISO 2930:2025
10.99 New project approved
Jan 1, 2025

Related project

Adopted from ISO 2930:2024 IDENTICAL