EN 15788:2009

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Diluents, selective medium and test kit for
   phenotypic characterisation
6 Apparatus and glassware
7 Sampling
8 Preparation of test sample
9 Procedure
10 Expression of results
11 Precision
12 Test report
Annex A (informative) - Notes on procedure
Annex B (informative) - Results of the interlaboratory
                        study
Bibliography

This European Standard defines general rules for the enumeration of enterococci in feed samples (additives, premixtures and feeding stuffs) that contain enterococci (E. faecium) as a single microorganism component or in a mixture with other microorganisms. This standard is not applicable to mineral feeds which are defined as complementary feedingstuffs composed mainly of minerals and containing at least 40% crude ash (Council Directive 79/373/EEC) [3].There are different categories of feed samples:a)Additives containing about 1010 colony forming units (CFU)/g;b)Premixtures containing 108 CFU/g;c)Feeds, meal or pellets which contain about 106 CFU/g and include complete feeding stuffs,and milk replacers.The detection limit is as defined in ISO 7218.