Reference number
ISO 7251:1993
ISO 7251:1993
© ISO 2024
ISO 7251:1993
Microbiology — General guidance for enumeration of presumptive Escherichia coli — Most probable number technique
Edition 2
1993-12
1993-12
Retirada
Resumen
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.
Informaciones generales
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Estado: RetiradaFecha de publicación: 1993-12Etapa: Retirada de la Norma Internacional [95.99]
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Edición: 2Número de páginas: 7
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Comité Técnico :ISO/TC 34/SC 9ICS :07.100.01
- RSS actualizaciones
Ciclo de vida
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Anteriormente
RetiradaISO 7251:1984
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Ahora
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Revisada por
PublicadoISO 7251:2005