ASTM WK45240

    New Test Methods for Standard Test Methods for the particle size distribution measurement of powdered materials by wet and dry laser diffraction

    (What is a Work Item?)

    Developed by Subcommittee: E29.02 | Committee E29 | Contact Staff Manager


    1. Scope

    1. This practice guide sets out the general approach to the particle size distribution measurement of powders, suspensions, or slurries using an appropriate wet or dry methodology by the laser diffraction technique. It is recommended for use in measurements of broad particle size distributions. 2. The guide provides guidelines to the parameters that should be specified and a generalized guideline to reasonable and acceptable tolerances for points in the distribution curve such as dv10 (D 10), dv50 (D 50), dv90 (D 90) and D[4, 3]. 3. It provides guidance on the verification of instrument performance in conjunction with the internal QC audit functions of the instrument owner.


    laser diffraction,

    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:
    Alan Rawle

    Draft Under Development