Comments On the Effect of Gas Velocity On Oxygen Index Measurements

Abstract

For certain materials, the velocity of the mixed gas stream used in an oxygen index determination has been reported to exert a strong influence on the ex perimental result. It is now possible to rationalise these reported dependences which are shown to result from the form of column used in the test. A proposed modification to the column outlet eliminates the dependence of oxygen index on gas velocity over the range of gas velocity permitted by the testing standards.