(9) The concentration of benzene and that of aromatics in butane referred to in the definition “commercially pure butane” in subsection 1(1) must be measured in accordance with the American Society for Testing and Materials method D 2163-91, Standard Test Method for Analysis of Liquefied Petroleum (LP) Gases and Propene Concentrates by Gas Chromatography.
(9) La concentration de benzène et celle d’aromatiques dans le butane visées à la définition de « butane pur de qualité commerciale » au paragraphe 1(1) doivent être mesurées conformément à la méthode D 2163-91 de l’American Society for Testing and Materials, intitulée Standard Test Method for Analysis of Liquefied Petroleum (LP) Gases and Propene Concentrates by Gas Chromatography.