ISO/CD 2930

Rubber, raw natural — Determination of plasticity retention index (PRI)

General information

Current stage: 30.99 Effective date: Feb 7, 2023

Originator: ISO

Owner: ISO/TC 45/SC 3

Type: International Standard

Scope

ISO 2930:2017 specifies a method for determining 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

Revises
ISO 2930:2017

NOW

IN_DEVELOPMENT
ISO/CD 2930
30.99 CD approved for registration as DIS
Feb 7, 2023

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