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EN ISO 17994:2004

Water quality - Criteria for establishing equivalence between microbiological methods (ISO 17994:2004) EN ISO 17994:2004

Publication date:   Jul 27, 2005

General information

99.60 Withdrawal effective   Feb 19, 2014

CEN

CEN/TC 230 Water analysis

European Norm

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

Related legislation

Legislation related to this standard

98/83/EC

Quality of water intended for human consumption

Legislation 98/83/EC

Life cycle

NOW

WITHDRAWN
EN ISO 17994:2004
99.60 Withdrawal effective
Feb 19, 2014

REVISED BY

PUBLISHED
EN ISO 17994:2014