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ISO 17994:2004

Water quality — Criteria for establishing equivalence between microbiological methods

Publication date:   May 14, 2004

95.99 Withdrawal of Standard   Feb 6, 2014

General information

95.99 Withdrawal of Standard   Feb 6, 2014

ISO

ISO/TC 147/SC 4 Microbiological methods

International Standard

13.060.70   Examination of biological properties of water | 07.100.20   Microbiology of water

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Scope

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).

Life cycle

NOW

WITHDRAWN
ISO 17994:2004
95.99 Withdrawal of Standard
Feb 6, 2014

REVISED BY

PUBLISHED
ISO 17994:2014