ISO 7402:1993

Microbiology -- General guidance for the enumeration of Enterobacteriaceae without resuscitation -- MPN technique and colony-count technique

Gives general guidance for the enumeration of Enterobacteriaceae present in products intended for human consumption or animal feeding stuffs: 1) by calculation of the most probable number after incubation at 35 °C or 37 °C in liquid medium (MPN technique), or 2) by counting colonies in a solid medium after incubation at 35 °C or 37 °C (colony-counting technique). For low numbers, the MPN method is preferable, otherwise the colony-count method is preferred.


General information

  • Current status : Withdrawn
    Publication date : 1993-09
  • Edition : 2
    Number of pages :
  • :
    ISO/TC 34/SC 9
    Microbiology
  • 07.100.01
    Microbiology in general

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