BS EN ISO 3093:2009

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.