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  • BS 7020-19:1988

    Current The latest, up-to-date edition.

    Analysis of iron ores Method for the determination of fluorine content. Ion-selective electrode method

    Available format(s):  Hardcopy, PDF

    Language(s):  English

    Published date:  31-01-1989

    Publisher:  British Standards Institution

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    Table of Contents - (Show below) - (Hide below)

    National foreword
    Committees responsible
    Method
    1. Scope and field of application
    2. References
    3. Principle
    4. Reagents
    5. Apparatus
    6. Sampling and samples
    7. Procedure
    8. Expression of results
    9. Test report
    Annexes
    A. Flowsheet of the procedure for the acceptance of
        analytical values for test samples
    B. Derivation of repeatability and permissible
        tolerance equations
    C. Precision data obtained by international analytical
        trial
    Tables
    1. Mass of test portion
    2. Preparation of calibration solutions
    Figures
    1. Least-squares fit of precision against X for
        fluorine

    Abstract - (Show below) - (Hide below)

    Applicable to fluorine contents in the range 0.005 to 1% (m/m) in natural iron ores, and iron ore concentrates and agglomerates including sinter products.

    Scope - (Show below) - (Hide below)

    This International Standard specifies an ion-selective electrode method for the determination of the fluorine content of iron ores.

    This method is applicable to a concentration range of 0,005 to 1 % (m/m) 1) of fluorine in natural iron ores, and iron ore concentrates and agglomerates including sinter products.

    General Product Information - (Show below) - (Hide below)

    Committee W/-
    Development Note Supersedes 85/44054 DC Also numbered as ISO 4694 (09/2005) Reviewed and confirmed by BSI, October 2014. (09/2014)
    Document Type Standard
    Publisher British Standards Institution
    Status Current

    Standards Referencing This Book - (Show below) - (Hide below)

    BS 5660-1:1987 Methods of sampling iron ores Manual method of increment sampling
    ISO 5725:1986 Precision of test methods Determination of repeatability and reproducibility for a standard test method by inter-laboratory tests
    BS 5660-2:2001 Methods of sampling iron ores Sampling and sample preparation procedures
    BS 7020-1:1988 Analysis of iron ores Method for the preparation of pre-dried test samples for chemical analysis
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