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Title: Chromatographic Analysis Of Natural Gas Liquids
Author: Bob Armbruster
Source: 2017 International School of Hydrocarbon Measurement
Year Published: 2017
Abstract: Accurate laboratory analysis is impossible unless a truly representative sample is delivered to the laboratory. The purpose of this paper is not to teach natural gas liquid sampling, but it is appropriate to list some of the most important aspects of sampling. Composite samplers should be flow proportional. That is, the sample pump stroke should be initiated by flow volume. It should not be time proportional. That is, the sample pump stroke should actuate based on periodic product flow volume intervals, and not be initiated by time. If the sample rate is time proportional, it should at least have a provision for stopping sample collection if the flow stops.

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