BS EN ISO 4589-2:2017 specifies methods for determining the minimum volume fraction of oxygen, in admixture with nitrogen, that will support combustion of small vertical test specimens under specified test conditions. The results are defined as oxygen index (OI) values.

Methods are provided for testing materials that are self-supporting in the form of vertical bars or sheets up to 10,5 mm thick. These methods are suitable for solid, laminated or cellular materials characterized by an apparent density 100 kg/m3 or greater. The methods might also be applicable to some cellular materials having an apparent density of less than 100 kg/m3. A method is provided for testing flexible sheets or film materials while supported vertically.

For comparative purposes, a procedure is provided for determining whether or not the OI of a material lies above some specified minimum value.


Cross References:
ISO 7823-1:2003 (R07) Ed 4
ISO 2859-2
ISO 5725-2
ISO 291:2008 Ed 4
ISO 4589-1:2017
ISO 13943:2008 Ed 2
ISO 2859-1:1999 ISO 2818:1994 (R10) Ed 1
ISO 295:2004 Ed 3
ISO 3582:2000 Ed 2
ISO 3167:2014 ED5
ISO 293:2004 Ed 3
ASTM D2863 - 95
ISO 5725:1986
ISO 294:1995


All current amendments available at time of purchase are included with the purchase of this document.