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BS EN ISO 3093:2009

Current
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

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

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

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.

Committee
AW/4
DevelopmentNote
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)
DocumentType
Standard
Pages
20
PublisherName
British Standards Institution
Status
Current
Supersedes

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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