GSO ISO 4589-4:2023

ISO 4589-4:2021
Gulf Standard   Current Edition · Approved on 03 May 2023

Plastics — Determination of Burning Behaviour by Oxygen Index — Part 4: High Gas Velocity Test

GSO ISO 4589-4:2023 Files

English 29 Pages
Current Edition Reference Language
65.59 OMR

GSO ISO 4589-4:2023 Scope

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.

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