Abstract

ISO 17994:2004 defines an evaluation procedure for comparing two methods intended for the detection or quantification of the same target group or species of microorganisms.

ISO 17994:2004 provides the mathematical basis for the evaluation of the average relative performance of two methods against chosen criteria of equivalence.

Any two enumeration methods based on counts (of colonies or positive tubes) or any two detection methods (presence/absence methods) intended for the same purpose can be compared.

ISO 17994:2004 provides no solution to directly compare a quantitative method (colony count or MPN) with a detection method (P/A).


General information 

  • Status
     : Withdrawn
    Publication date
     : 2004-05
  • Edition
     : 1
    Number of pages
     : 18
  • Technical Committee
     : ISO/TC 147/SC 4 Microbiological methods
  • ICS
     :
    07.100.20 Microbiology of water
    13.060.70 Examination of biological properties of water

Life cycle

Got a question?

Check out our FAQs

Customer care
+41 22 749 08 88

Opening hours:
Monday to Friday - 09:00-12:00, 14:00-17:00 (UTC+1)

  2. Store
  3. Standards catalogue
  4. TC
  5. ISO/TC 147/SC 4
  6. ISO 17994:2004