ISO 7251:1993
ISO 7251:1993


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 

  •  :  Withdrawn
     : 1993-12
  •  : 2
     : 7
  •  : ISO/TC 34/SC 9 Microbiology
  •  :
    07.100.01 Microbiology in general

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