ASTM WK73584

    New Test Methods for Determination of Moisture Content of Cannabis Flower and Leaves

    (What is a Work Item?)

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


    1. Scope

    1.1 These test methods cover the determination of moisture as water by weight for cannabis flowers and leaves. The test methods are valid for samples having 1-15% water by weight. Test Method A: Volumetric Karl Fischer Titration with External Extraction Test Method B: Volumetric Karl Fischer Titration using Oven Accessory Test Method C: Thermogravimetric Moisture Content Determination 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.3 Volatile matter of any kind other than water that could evaporate at 90C or lower might impair the accuracy of Method C


    Hemp; PCR Hemp; dry weight; moisture content; moisture analyzer; Karl Fischer; Loss on Drying; Total Solids; Dry Content


    Test method will outline the proper sample weight, preparation and analysis techniques; time and temperature, to obtain accurate moisture, as water content by mass, content of cannabis plant materials where there is a high risk of inaccurate results in phytocannabinoid and terpenoid rich cannabis. Users will be: Cannabis producers, processors, and testing labs.

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

    Citing ASTM Standards
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    Work Item Status

    Date Initiated:

    Technical Contact:
    Annie Massey

    Draft Under Development