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ISO 7251:1993

Microbiology — General guidance for enumeration of presumptive Escherichia coli — Most probable number technique

Dec 23, 1993
95.99 Withdrawal of Standard   Feb 9, 2005

General information

95.99     Feb 9, 2005

ISO

ISO/TC 34/SC 9

International Standard

07.100.01  

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Scope

Gives general guidelines for the enumeration of presumptive Escherichia coli in products intended for human consumption or feeding of animals, by means of the liquid-medium culture technique and calculation of the most probable number after incubation at 35 °C or 37 °C (this temperature forming the subject of agreement between the parties concerned), then incubation at 45 °C. A limitation of the applicability is imposed by the susceptibility of the method to a large degree of variability.

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 7251:1984

NOW

WITHDRAWN
ISO 7251:1993
95.99 Withdrawal of Standard
Feb 9, 2005

REVISED BY

ABANDON
ISO/CD 16649-3

PUBLISHED
ISO 7251:2005