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BSI BS ISO 4589-4:2021

Plastics. Determination of burning behaviour by oxygen index -- High gas velocity test
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BSI BS ISO 4589-4:2021

Plastics. Determination of burning behaviour by oxygen index -- High gas velocity test

PUBLISH DATE 2021
PAGES 38
BSI BS ISO 4589-4:2021

This document specifies a test method for determining the minimum volume fraction of oxygen, in admixture with nitrogen, at ambient temperature, that supports combustion of small vertical sheet test specimen under a specified gas velocity that is higher than that specified in ISO 4589-2.

NOTE

The result is expressed as a high gas velocity oxygen index (HOI).

In addition, this document specifies the testing apparatus for determining the HOI.

The test method is applicable to materials in the form of sheets up to 2 mm thick. It is also applicable to flexible sheet materials that are supported vertically by a specified specimen holder.

SDO BSI: British Standards Institution
Document Number ISO 4589-4
Publication Date May 10, 2021
Language en - English
Page Count 38
Revision Level
Supercedes
Committee PRI/26
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