D2013 Annex A1, Method of checking the precision of sample preparation and analysis especially Section A1.2 Procedure was reviewed and improved. The wording of the procedure for preparing samples to test for variance in preparation was not perfect, but is understandable after several readings. The task group desired to increase the usage of the annex without changing the procedure itself. Therefore, editorial changes are being proposed 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 considered editorial and are proposed to improve readability and understanding. As such, the 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 in the lab.
coal; composite; division; reduction; Coal sampling systems ;
Citing ASTM Standards
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