ASTM WK68772

    New Test Method for Analysis of Cannabinoids in Cannabis and Cannabis Extracts by Gas Chromatography (GC)

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    Developed by Subcommittee: D37.03 | Committee D37 | Contact Staff Manager



    WK68772

    1. Scope

    1.1.This test method covers the analysis of terpenes and cannabinoids in cannabis and cannabis extracts by Gas Chromatography (GC). This test method is applicable to cannabis and processed cannabis extracts. This includes marijuana and hemp plant materials and extracts. The applicable concentration range will vary to some extent depending on the nature of the sample and the instrumentation used; however, in most cases, the test method is applicable to the determination of major individual terpene and cannabinoid species from 0.01 to 30 mass%. Particular emphasis is placed on the determination of delta-9-tetrahydrocannabinol (9THC) for regulatory purposes. 1.2.The test method does not purport to identify all individual terpenes and cannabinoids. However, it does determine major terpenes and cannabinoids of typical interest. Individual users can adapt this method for specific custom analyses to meet their needs. 1.3.The values stated in SI units are to be regarded as the standard. The values given in parentheses are for informational purposes only. 1.4.This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.


    Keywords

    Pinene, Myrcene, Limonene, Caryophyllene, Humulene, Cannabidiol (CBD), CBDA, THC, THCA, Cannabinol (CBN)

    Rationale

    The measurement of terpenes and cannabinoids in cannabis is needed to optimize plant selection, processing, quality control and to meet regulatory requirements. The use of GC for meeting these needs is attractive because GC is relatively accurate, simple and inexpensive compared to other techniques. It is capable of measuring both terpenes and cannabinoids in a single analysis and is complimentary to other techniques, especially for process control and verification. There is a lack of standard test methods in this industry and across government organizations.

    The title and scope are in draft form and are under development within this ASTM Committee.

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    Work Item Status

    Date Initiated:
    06-21-2019

    Technical Contact:
    Randall Shearer

    Status:
    Draft Under Development