EN ISO 17994:2014

Water quality - Requirements for the comparison of the relative recovery of microorganisms by two quantitative methods (ISO 17994:2014)

ISO 17994:2014 specifies an evaluation procedure for comparing two methods with established performance characteristics according to ISO/TR 13843 and intended for the quantification of the same target group or species of microorganisms.
It provides the mathematical basis for the evaluation of the average relative performance of two quantitative methods against chosen criteria for the comparison. It does not provide data for assessment of the precision of the methods being compared. It is appropriate that the precision of methods is assessed as part of their performance characterization.
ISO 17994:2014 does not provide methods for the verification of method performance characterization in a single laboratory.

Wasserbeschaffenheit - Anforderungen für den Vergleich der relativen Wiederfindung von Mikroorganismen durch zwei quantitative Verfahren (ISO 17994:2014)

Diese Internationale Norm legt ein Bewertungsverfahren fest, um zwei Verfahren mit etablierten Leistungsmerkmalen nach ISO/TR 13843 zu vergleichen, die für den Nachweis oder die Quantifizierung derselben Zielgruppe oder Spezies von Mikroorganismen vorgesehen sind.
Diese Internationale Norm liefert die mathematische Grundlage für die Bewertung der durchschnittlichen relativen Leistungsfähigkeit von zwei Verfahren unter Heranziehung festgelegter Gleichwertigkeitskriterien. Sie liefert keine Daten, die eine Bewertung der Präzision der verglichenen Verfahren erlaubt. Es ist zweckmäßig, dass die Genauigkeit der Verfahren im Rahmen ihrer Leistungscharakterisierung beurteilt.
Diese Internationale Norm enthält keine Methoden, um die Leistungsfähigkeit eines Verfahrens in einem einzelnen Labor zu verifizieren.

Qualité de l'eau - Exigences pour la comparaison du rendement relatif des microorganismes par deux méthodes quantitatives (ISO 17994:2014)

L'ISO 17994:2014 spécifie une procédure d'évaluation qui permet de comparer deux méthodes avec des caractéristiques de performance établies conformément à l'ISO/TR 13843 et visant à quantifier le même groupe cible ou la même espèce de micro-organismes.
Elle fournit les bases mathématiques pour évaluer les performances relatives moyennes des deux méthodes quantitatives par rapport à des critères de comparaison déterminés. Elle ne fournit aucune donnée permettant d'évaluer la fidélité des méthodes comparées. Il convient que la fidélité des méthodes soit évaluée lors de la détermination de leurs caractéristiques de performance.
L'ISO 17994:2014 ne propose aucune méthode permettant de vérifier les caractéristiques de performance des méthodes au sein d'un seul laboratoire.

Kakovost vode - Zahteve za primerjavo relativne ponovitve mikroorganizmov z dvema kvantitativnima metodama (ISO 17994:2014)

Standard EN ISO 17994 določa postopek ocenjevanja za primerjavo dveh metod kvantifikacije iste ciljne skupine ali vrste mikroorganizmov. Ta mednarodni standard zagotavlja matematično osnovo za ocenjevanje povprečne relativne učinkovitosti dveh kvantitativnih metod glede na izbrane kriterije primerjave. Ne zagotavlja podatkov, ki bi omogočili ocenjevanje natančnosti primerjanih metod. Natančnost metod naj bi se ocenjevala kot del njihove validacije. Ta mednarodni standard ne zagotavlja metod za preverjanje učinkovitosti metod v enem laboratoriju.

General Information

• Status: Published
• Publication Date: 18-Feb-2014
• Withdrawal Date: 30-Aug-2014
• ICS: 07.100.20 - Microbiology of water
• ICS: 13.060.70 - Examination of biological properties of water
• Technical Committee: CEN/TC 230 - Water analysis
• Drafting Committee: CEN/TC 230 - Water analysis
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 19-Feb-2014
• Due Date: 28-Jun-2013
• Completion Date: 19-Feb-2014
• Directive: 98/83/EC - Quality of water intended for human consumption
• Ref Project: SIST EN ISO 17994:2014 - Water quality - Requirements for the comparison of the relative recovery of microorganisms by two quantitative methods (ISO 17994:2014)

Relations

• Replaces: EN ISO 17994:2004 - Water quality - Criteria for establishing equivalence between microbiological methods (ISO 17994:2004)
• Effective Date: 09-Oct-2010

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN ISO 17994:2014
01-september-2014
1DGRPHãþD
SIST EN ISO 17994:2004
Kakovost vode - Zahteve za primerjavo relativne ponovitve mikroorganizmov z
dvema kvantitativnima metodama (ISO 17994:2014)
Water quality - Requirements for the comparison of the relative recovery of
microorganisms by two quantitative methods (ISO 17994:2014)
Wasserbeschaffenheit - Anforderungen für den Vergleich der relativen Wiederfindung
von Mikroorganismen durch zwei quantitative Verfahren (ISO 17994:2014)
Qualité de l'eau - Exigences pour la comparaison du rendement relatif des
microorganismes par deux méthodes quantitatives (ISO 17994:2014)
Ta slovenski standard je istoveten z: EN ISO 17994:2014
ICS:
07.100.20 Mikrobiologija vode Microbiology of water
13.060.70 Preiskava bioloških lastnosti Examination of biological
vode properties of water
SIST EN ISO 17994:2014 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 17994:2014

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SIST EN ISO 17994:2014

EUROPEAN STANDARD
EN ISO 17994

NORME EUROPÉENNE

EUROPÄISCHE NORM
February 2014
ICS 07.100.20; 13.060.70 Supersedes EN ISO 17994:2004
English Version
Water quality - Requirements for the comparison of the relative
recovery of microorganisms by two quantitative methods (ISO
17994:2014)
Qualité de l'eau - Exigences pour la comparaison du Wasserbeschaffenheit - Anforderungen für den Vergleich
rendement relatif des microorganismes par deux méthodes der relativen Wiederfindung von Mikroorganismen durch
quantitatives (ISO 17994:2014) zwei quantitative Verfahren (ISO 17994:2014)
This European Standard was approved by CEN on 8 February 2014.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same
status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United
Kingdom.





EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2014 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 17994:2014 E
worldwide for CEN national Members.

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SIST EN ISO 17994:2014
EN ISO 17994:2014 (E)
Contents Page
Foreword .3
2

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SIST EN ISO 17994:2014
EN ISO 17994:2014 (E)
Foreword
This document (EN ISO 17994:2014) has been prepared by Technical Committee ISO/TC 147 "Water quality"
in collaboration with Technical Committee CEN/TC 230 “Water analysis” the secretariat of which is held by
DIN.
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by August 2014, and conflicting national standards shall be withdrawn at
the latest by August 2014.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 17994:2004.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech
Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.
Endorsement notice
The text of ISO 17994:2014 has been approved by CEN as EN ISO 17994:2014 without any mod
...