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  • BS EN ISO 3093:2009

    Current The latest, up-to-date edition.

    Wheat, rye and their flours, durum wheat and durum wheat semolina. Determination of the falling number according to Hagberg-Perten

    Available format(s):  Hardcopy, PDF

    Language(s):  English

    Published date:  31-01-2010

    Publisher:  British Standards Institution

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

    Foreword
    1 Scope
    2 Normative references
    3 Terms and definitions
    4 Principle
    5 Reagents
    6 Apparatus
    7 Sampling
    8 Preparation of test sample
    9 Procedure
    10 Precision
    11 Test report
    Annex A (normative) - Equations for altitude correction of
            falling numbers
    Annex B (informative) - Results of interlaboratory tests
    Bibliography

    Abstract - (Show below) - (Hide below)

    Describes the determination of the alpha-amylase activity of cereals by the falling number (FN) method according to Hagberg-Perten.

    Scope - (Show below) - (Hide below)

    This International Standard specifies the determination of the α-amylase activity of cereals by the falling number (FN) method according to Hagberg-Perten.

    This method is applicable to cereal grains, in particular to wheat and rye and their flours, durum wheat and its semolina.

    This method is not applicable to the determination of low levels of α-amylase activity.

    By converting the FN into a liquefaction number (LN), it is possible to use this method to estimate the composition of mixtures of grain, flour or semolina with known FNs necessary to produce a sample of a required FN.

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

    Committee AW/4
    Development Note Renumbers and supersedes BS ISO 3093. 2007 Version incorporates amendment 17028 to BS ISO 3093. Supersedes BS 4317-9(1982) and 98/712730 DC. (04/2007)
    Document Type Standard
    Publisher British Standards Institution
    Status Current
    Supersedes

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

    ISO 565:1990 Test sieves — Metal wire cloth, perforated metal plate and electroformed sheet — Nominal sizes of openings
    ISO 712:2009 Cereals and cereal products — Determination of moisture content — Reference method
    ISO 13690:1999 Cereals, pulses and milled products Sampling of static batches
    ISO 8655-2:2002 Piston-operated volumetric apparatus Part 2: Piston pipettes
    ISO 5725:1986 Precision of test methods Determination of repeatability and reproducibility for a standard test method by inter-laboratory tests
    ISO 3696:1987 Water for analytical laboratory use — Specification and test methods
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