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Gas Quality Standards
Gas Sampling and Physical Constants - Documents Used
A.G.A. Report No. 8,
Compressibility Factors of Natural Gas and Other Related Hydrocarbon Gases, Second Edition
, revised in August 1994 [compressibility in all volume calculations, included by reference in AGA 3, 7, 9]
GPA Standard 2145-09,
Table of Physical Constants for Hydrocarbons and Other Compounds of Interest to the Natural Gas Industry
, revised in 2009 [constants for calculation of heating value and specific gravity, all meters]
GPA Standard 2166-05,
Obtaining Natural Gas Samples for Analysis by Gas Chromatography
, revised in 2005
GPA Standard 2172,
Calculation of Gross Heating Value, Relative Density and Compressibility Factor for Natural Gas Mixtures from Compositional Analysis
, [Calculation of Heating Value and Relative Density (Specific Gravity) for all meters]
GPA Standard 2261-00,
Analysis for Natural Gas and Similar Gaseous Mixtures by Gas Chromatography
, revised in 2000
API 14.1,
Collecting and Handling of Natural Gas Samples for Custody Transfer
, Sixth Edition, revised in February 2006