ISO/CD 21722
Microbiology of the food chain — Horizontal method for enumeration of enterococci
Reference number
ISO/CD 21722
Edition 1
Committee Draft
ISO/CD 21722
A draft is being reviewed by the committee.


This standard specifies a horizontal method for the enumeration of enterococci as faecal indicators in food, feed and environmental samples by the colony-count technique on a selective solid medium (Slanetz and Bartley agar) by an identification scheme based on tetrazolium reduction and formazan production following by confirmation based on split aesculin at 44°C on Bile Aesculin azide Agar.

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