ASTM WK35999

    Work Item: ASTM WK35999 - Revision of D2013 / D2013M - 11 Standard Practice for Preparing Coal Samples for Analysis

    Active Standard: D2013 / D2013M - 12

    Developed by Subcommittee: D05.23 | Committee D05 | Contact Staff Manager



    1. Rationale

    D2013 Annex A1, Method of checking the precision of sample preparation and analysis especially Section A1.2 Procedure was reviewed. The wording of the procedure needs updates to clarify the instructions and reduce the time needed to understand the procedure. These changes should also reduce errors of interpretation. In addition, a flow sheet/flow chart of the procedure is proposed for insertion into the standard that follows the existing procedure, as a visual aid to further improve the readers understanding. These changes are not considered a revision to the existing way of performing the annex, but it is hoped the changes will improve readability and make the procedure easier to understand and perform.


    Keywords

    coal; composite; division; reduction; Coal sampling systems ;
    Citing ASTM Standards
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