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    ASTM WK72911

    Revision of C721 - 15 Standard Test Methods for Estimating Average Particle Size of Alumina and Silica Powders by Air Permeability

    (What is a Work Item?)

    Active Standard: C721 - 20

    Developed by Subcommittee: C21.04 | Committee C21 | Contact Staff Manager

    More C21.04 Standards Related Products Copyright/Permissions

    WK72911

    Keywords

    air permeability; alumina; average particle size; envelope-specific surface area; Fischer Number; particle size; permeability; porosity; powder; quartz; silica; specific surface;;

    Rationale

    Adding instrument schematic and updating instrument name.

    Citing ASTM Standards
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    Work Item Status

    Date Initiated:
    05-06-2020

    Technical Contact:
    Frank Venskytis

    Item:
    002

    Ballot:
    C21 (20-04)

    Status:
    Ballot Item Approved as C721-2020 and Pending Publication