Abstract
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.
General information
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Status: WithdrawnPublication date: 1993-12Stage: Withdrawal of International Standard [95.99]
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Edition: 2Number of pages: 7
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Technical Committee :ISO/TC 34/SC 9ICS :07.100.01
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Life cycle
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Previously
WithdrawnISO 7251:1984
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Now
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Revised by
PublishedISO 7251:2005
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