DIN EN ISO 13686:2007-09

EN ISO 13686 specifies the parameters required to describe finally processed and, where required, blended natural gas. It contains a list of these parameters, their units and references to measurement standards. Informative annexes give examples of typical values for these parameters. In defining the parameters governing composition, physical properties and trace constituents, consideration has also been given to existing natural gases. The question of interchangeability is dealt with in annex A clause A.2.