Volume 7, Issue 6 (November 1979)

    Reproducibility of the Surface Area of Some Powders as Measured by the Monosorb® Surface-Area Analyzer Using the Brunauer-Emmett-Teller Equation

    CODEN: JTEOAD

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    Abstract

    The precision of the measurement of the specific surface area of powders was studied for 15 different materials. Measurements were obtained in such a way that both instrument and sampling contributions to the total errors could be estimated. The overall coefficient of variation was 6.5%. The instrument reproducibility was 2.7%. The total reproducibility of free-flowing powders was 4.2%, but for non-free-flowing powders, which are hard to sample, the total reproducibility was 8.5%.


    Author Information:

    Ace, HL
    Senior technician and head, Physical Testingmember of ASTM, GTE Sylvania, Towanada, Pa.

    Parsons, DS
    Senior technician and head, Physical Testingmember of ASTM, GTE Sylvania, Towanada, Pa.


    Stock #: JTE11510J

    ISSN: 0090-3973

    DOI: 10.1520/JTE11510J

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    Author
    Title Reproducibility of the Surface Area of Some Powders as Measured by the Monosorb® Surface-Area Analyzer Using the Brunauer-Emmett-Teller Equation
    Symposium , 0000-00-00
    Committee B09