ISO-4589-1 Plastics - Determination of burning behaviour by oxygen index - Part 1: General requirements

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ISO 4589-1:2017 specifies the general requirements for the oxygen index (OI) test which are further described in ISO 4589‑2 and ISO 4589‑3 as follows:

- ISO 4589‑2 describes a method for determining the minimum volume fraction of oxygen in a mixture of oxygen and nitrogen introduced at 23 ¦C ¦ 2 ¦C that will just support combustion of a material under specified test conditions;

- ISO 4589‑3 describes methods of carrying out the same determination over a range of temperatures typically between 25 ¦C and 150 ¦C (although temperatures up to 400 ¦C can be used).




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13.220.40 (Ignitability and burning behaviour of materials and products)

83.080.01 (Plastics in general)

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Document Number

ISO 4589-1:2017

Revision Level




Publication Date

April 1, 2017

Committee Number

ISO/TC 61/SC 4