SYXOPSIS.

The paper indicnlps the petroleum testing methods and oil metisiirernerat procedures recognized and used in about TO countries from zoh, ich the infornzntbon toas obtained. Information i s also given regarding Nation.al Standards bodies, where th, ese exist, tincl the extent to which they, or other local cissociated bodies, participatp in the production and presentation of attintlard methods f or testing and, measuring crude oil and petroleum products. The need for internutional rather than national methods and procedures is emphasized. Unilateral amendment of methods such us those published by the -4?iierican Society /or Testing Materials (ASTM) and the Institute of PP - troleiinr. (IP) is deprecaled. Th, e need /or strengthening and nia1cin.g wider use of Technical Committee No. 2 8 (Prtroleum Prodiicts) of th, e Jnternation, ab Organization for Standardization (ISOlTC 2 8) is eiizphnsbzed. ThLs in tiirn ioonld benefit all concerned with, quality and quantity control over petroleum products purchased and sold, tlom, estically and internationally.

R@UMB.

Duns cette coni ?ti uraicatiorr. on passe en revue les mithodes d'essai &U pitrole et les trchniqiies d e mesure des huiles ininerales reconnues et employees dans 7 0 p, ays environ desquels on ri reCll directement ces inform, ations. On fait aussi allusion aux organismes nationaux de nornzalisntion et ri l'activitd que ces organ.ismes (ou bien leurs sections) diveloppent en prisentan, t et publiant des nidthodes unitides pour la rnesure et l'analyse du pitrole brut et des protluits dl.u pitrole. On met en relief l'opportunitd d'appliquer des methodes internationales en remplacement des rndthodes nationales. Les modifications unilatirales apportees a des rndthodes comme celles pziblides par 1'Arnerican Society for Testing Materials (ASTM) et pa, r I'Institute of Petroleum (IP) sont Ci iviter. On sozr1ign.e en particulier la nicessiti de rnievx renseigner le Conaite Technique No 28 (Produits du Pitrole) de l'lnternational Standardization Organisation (ISOITC 2 8) et de la consulter plus lnrgement. Cela apporterait un veritable avantage U tous ceux qui s'intdressent au contrcile tant quUlitU, tif pie quantitatif des produits du petrole nchetis et vewlirs nussi bien ir l'interieur qu'h b'itranger.

RIASSUN'TO.

Sono elencdi i nzetodi di prom del petrolio e i procedimenti tli misure degli oli 'miizernli ricon.osciuti ed impiegati. in, circa. 70 paesi dei quali furono direttamente ottenute le infOTmU- zioni. Viene anche fatto cenno agli Enti Nazionali di Unipcazio.ne, ove questi esistano, e all'attivith che gbi stessi (0 lor0 branche) svol.gono nella emissione e pubblicazione di metodi unificati per la, miSU- razione e l'nnadisi del p

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