ISO 10156:2017规定了确定气体或气体混合物在空气中是否易燃的方法，以及在大气条件下，气体或气体混合物是否比空气具有更多或更少的氧化性。 ISO 10156:2017旨在用于气体和气体混合物的分类，包括气瓶阀门出口的选择。 ISO 10156:2017不包括在压力和环境温度以外的温度下安全制备这些混合物。

ISO 10156:2017 specifies methods for determining whether or not a gas or gas mixture is flammable in air and whether a gas or gas mixture is more or less oxidizing than air under atmospheric conditions. ISO 10156:2017 is intended to be used for the classification of gases and gas mixtures including the selection of gas cylinder valve outlets. ISO 10156:2017 does not cover the safe preparation of these mixtures under pressure and at temperatures other than ambient.