EN ISO 17994:2004
(Main)Water quality - Criteria for establishing equivalence between microbiological methods (ISO 17994:2004)
Water quality - Criteria for establishing equivalence between microbiological methods (ISO 17994:2004)
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).
Wasserbeschaffenheit - Kriterien für die Feststellung der Gleichwertigkeit von mikrobiologischer Verfahren (ISO 17994:2004)
Diese Internationale Norm legt ein Bewertungsverfahren fest, um zwei Verfahren zu vergleichen, die für den Nachweis oder die Quantifizierung derselben Zielgruppe oder Spezies von Mikroorganismen gedacht sind.
Diese Internationale Norm liefert die mathematische Grundlage für die Bewertung der durchschnittlichen relativen Leistungsfähigkeit von zwei Verfahren unter Heranziehung festgelegter Gleichwertigkeitskriterien.
Zwei beliebige quantitative Nachweisverfahren, die auf Zählungen (von Kolonien oder positiven Röhrchen) beruhen oder zwei beliebige qualitative Nachweisverfahren (Anwesenheit-/Abwesenheit-Verfahren), die dieselbe Zielsetzung haben, können verglichen werden.
Diese Internationale Norm liefert keine Lösung, um ein quantitatives Verfahren (Koloniezählung oder MPN) direkt mit einem qualitativen Nachweisverfahren (P/A) zu vergleichen.
Qualité de l'eau - Critères pour établir l'équivalence entre les méthodes microbiologiques (ISO 17994:2004)
L'ISO 17994:2004 définit une procédure d'évaluation qui permet de comparer deux méthodes visant à détecter ou à quantifier le même groupe cible ou la même espèce de micro-organismes.
L'ISO 17994:2004 fournit les bases mathématiques pour évaluer les performances relatives moyennes des deux méthodes par rapport à des critères d'équivalence déterminés.
Deux méthodes quelconques de dénombrement fondées sur des comptages (de colonies ou de tubes positifs) ou deux méthodes quelconques de détection [méthodes présence/absence (P/A)] visant au même objectif peuvent être comparées.
L'ISO 17994:2004 n'indique aucune solution qui permette de comparer directement une méthode quantitative (comptage de colonies ou NPP) avec une méthode de détection (P/A).
Kakovost vode - Merila za ugotavljanje enakovrednosti mikrobioloških metod (ISO 17994:2004)
General Information
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Kakovost vode - Merila za ugotavljanje enakovrednosti mikrobioloških metod (ISO 17994:2004)Wasserbeschaffenheit - Kriterien für die Feststellung der Gleichwertigkeit von mikrobiologischer Verfahren (ISO 17994:2004)Qualité de l'eau - Criteres pour établir l'équivalence entre les méthodes microbiologiques (ISO 17994:2004)Water quality - Criteria for establishing equivalence between microbiological methods (ISO 17994:2004)07.100.20Mikrobiologija vodeMicrobiology of waterICS:Ta slovenski standard je istoveten z:EN ISO 17994:2004SIST EN ISO 17994:2004en,fr,de01-november-2004SIST EN ISO 17994:2004SLOVENSKI
STANDARD
SIST EN ISO 17994:2004
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN ISO 17994May 2004ICS 07.100.20; 13.060.70English versionWater quality - Criteria for establishing equivalence betweenmicrobiological methods (ISO 17994:2004)Qualité de l'eau - Critères pour établir l'équivalence entreles méthodes microbiologiques (ISO 17994:2004)Wasserbeschaffenheit - Kriterien für die Feststellung derGleichwertigkeit von mikrobiologischen Verfahren (ISO17994:2004)This European Standard was approved by CEN on 9 April 2004.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2004 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN ISO 17994:2004: ESIST EN ISO 17994:2004
EN ISO 17994:2004 (E)
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Foreword
This document (EN ISO 17994:2004) 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 November 2004, and conflicting national standards shall be withdrawn at the latest by November 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, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
Endorsement notice
The text of ISO 17994:2004 has been approved by CEN as EN ISO 17994:2004 without any modifications.
SIST EN ISO 17994:2004
Reference numberISO 17994:2004(E)© ISO 2004
INTERNATIONAL STANDARD ISO17994First edition2004-05-15Water quality — Criteria for establishing equivalence between microbiological methods Qualité de l'eau — Critères pour établir l'équivalence entre les méthodes microbiologiques
SIST EN ISO 17994:2004
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