BS EN ISO 4589-1:2017
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05-22-2017
This document specifies the general requirements for the oxygen index (OI) test which are further described in ISO4589‑2 and ISO4589‑3 as follows:
ISO4589‑2 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;
ISO4589‑3 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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