This International Standard specifies minimum requirements for the contents of certificates for
homogeneous gas mixtures in gas cylinders to be used as calibration gas mixtures. Pure gases, when
used as calibration gas mixtures, are also covered by this International Standard. Gases and gas mixtures
produced for other purposes are not considered.
The requirements in this International Standard deal with the metrological aspects of calibration gas
mixtures. Other aspects, such as safety and legislative aspects, are not covered.
Furthermore, it specifies additional information (optional data) recommended for describing a
homogeneous gas mixture, supplied under pressure in a cylinder or other container. It does not cover
the field of safety-relevant data and related labelling.