Gas Analysis Methods – GPA 2261 and 2286

Posted by Andrew Parker, PhD on Jun 26, 2017 10:04:39 AM

Gas Processors Association methods define the analytical set up and procedure laboratories must follow to analyze natural gas. These methods are necessary because they standardize the analytical process labs must follow to ensure the fidelity of results between different labs.

GPA 2261 defines a simple natural gas analysis that is most commonly used for meter calibrations in the field. GPA 2286 defines the extended analysis of natural gas analyzing for carbon components usually up through Decanes (C10). Extended gas analyses are often ordered for EHS (VOC emissions, permitting) and engineering purposes.

It is important to note that while these methods define the analytical procedure and set up required for the analysis neither method specifically defines the components a laboratory must report as part of the data set. Therefore, it is best to check with the lab and request a component list or example report to ensure the data meets your expectations prior to sample submission.

Zedi Labs routinely perform GPA 2261 and 2286 at each of our 8 laboratory locations nationwide. Our GPA 2261 report lists Nitrogen, Carbon Dioxide, Methane (C1), Ethane (C2), Propane (C3), n- and iso- Butane (C4), n- and iso- Pentane (C5) and Hexanes + (C6). The data from this report is then used to calculate and report real/dry and saturated/unsaturated BTU values as well as specific gravity and compressibility.

Our GPA 2286 report lists all of the components included in the GPA 2261 report with the Hexanes+ peak further decomposed to report Heptane’s (C7), Octanes (C8), Nonanes (C9) and Decanes + (C10). BTEX components (Benzene, Ethylbenzene, Toluene and Xylene) are also part of the GPA 2286 gas analysis report. Additional gas components including Hydrogen Sulfide, Oxygen and Helium can be analyzed upon request.

At Zedi Labs, we employ a talented staff of Chemists, Engineers and Ph.D’s willing and ready to develop new methods and calculations to meet your gas analysis needs so never hesitate to ask for special requests.

If you have any questions about Zedi Lab Services please don’t hesitate to contact me directly.

Until next month.

Andrew Parker

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Topics: Lab Services