Standard

GPA STD 2177

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Omfang

This method is intended for the analysis of NGL mixtures which may contain nitrogen/air and carbon dioxide as well as purity products that fall within the compositional ranges listed in Table 1. The round-robin data includes the sample containing 62 mole percent of hexanes plus with a molecular weight of 93; therefore, it is recommended that the analysis of samples containing a higher molecular weight hexanes plus be made in accordance with GPA 2103. NOTE 5.1 – This method can be used for a hexanes plus analysis by adjusting the timing of the backflush event to occur following the elution of n-pentane. CAUTION 1 – In the case of unknown samples with a relatively large hexanes plus fraction and where precise results are important, it is desirable to determine the molecular weight (or other pertinent physical properties) of this fraction. Since this method makes no provision for determining physical properties, the physical properties needed must be determined by extended analysis according to GPA 2186 or agreed to by the contracting parties. Sample conditioning systems are not addressed in this standard.

Dokumentinformasjon

  • Standard fra GPA_AC
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