Name: EN ISO 3093:2009
Brand: CEN

Wheat, rye and their flours, durum wheat and durum wheat semolina - Determination of the falling number according to Hagberg-Perten (ISO 3093:2009)

Published date

15-12-2009

Publisher

Comite Europeen de Normalisation

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

ISO 3092:2009 specifies the determination of the alpha-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 alpha-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	CEN/TC 338
DocumentType	Standard
PublisherName	Comite Europeen de Normalisation
Status	Current

Standards	Relationship
BS EN ISO 3093:2009	Identical
NBN EN ISO 3093 : 2010	Identical
UNE-EN ISO 3093:2010	Identical
NS EN ISO 3093 : 2009	Identical
NEN EN ISO 3093 : 2010	Identical
SN EN ISO 3093 : 2010	Identical
DIN EN ISO 3093:2010-05	Identical
I.S. EN ISO 3093:2009	Identical
NF EN ISO 3093 : 2010	Identical
UNI EN ISO 3093 : 2010	Identical
ISO 3093:2009	Identical
PN EN ISO 3093 : 2010	Identical
SS-EN ISO 3093:2010	Identical

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