1.1 *This International Standard specifies requirements for low-pressure hose assemblies intended for use with the following medical gases:. oxygen;. nitrous oxide;. medical air;. helium;. carbon dioxide;. xenon;. specified mixtures of the gases listed above;. oxygen-enriched air;. air for driving surgical tools;. nitrogen for driving surgical tools;. vacuum.It is intended in particular to ensure gas-specificity and to prevent cross-connection between systemsconveying different gases. These hose assemblies are intended for use at maximum operating pressures of less than 1 400 kPa.1.2 This International Standard specifies the allocation of non-interchangeabl