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Norm
ISO 7251:1993
Ausgabedatum: 1993 12 23
Microbiology — General guidance for enumeration of presumptive Escherichia coli — Most probable number technique
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-medi...
Weiterlesen
ZURÜCKGEZOGEN
: 2005 02 09
Herausgeber:
International Organization for Standardization
Format:
Digital | 7 Seiten
Sprache:
Englisch
Aktuell Gültig:
ICS
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.
ISO 7251:2005
2005 02 09
Microbiology of food and animal feeding stuffs — Horizontal method for the detection and enumeration...
Norm
ISO 7251:1993
1993 12 23
Microbiology — General guidance for enumeration of presumptive Escherichia coli — Most probable numb...
Norm
↖
ISO 7251:1984
1984 11 01
Microbiology — General guidance for enumeration of presumptive Escherichia coli — Most probable numb...
Norm
Norm
ISO 7251:2005
Ausgabedatum :
2005 02 09
Microbiology of food and animal feeding stuffs — Horizontal method for the detection and enumeration of presumptive Escherichia coli — Most probable number technique