07.100.20 水的微生物学 标准查询与下载

LST EN ISO 9308-2:2014 水质. 大肠杆菌和大肠菌群的计数. 第2部分: 最确数法(ISO 9308-2-2012)

Water quality - Enumeration of Escherichia coli and coliform bacteria - Part 2: Most probable number method (ISO 9308-2:2012)

NF T90-414-2*NF EN ISO 9308-2:2014 水质. 大肠杆菌和大肠菌群的计数. 第2部分: 最确数法

La présente partie de l'ISO 9308 spécifie une méthode de dénombrement des Escherichia coli et des bactéries coliformes dans l'eau. La méthode est basée sur la croissance d'organismes cibles dans un milieu liquide et sur le calcul du "nombre le plus probable" d'organismes en fonction de tables NPP. Cette méthode peut être appliquée à tous les types d'eau, y compris ceux contenant une quantité appréciable de matière en suspension et des nombres importants de bactéries hétérotrophes. Cependant, elle ne doit pas être utilisée pour dénombrer les bactéries coliformes dans l'eau de mer. Lorsqu'elle est utilisée pour dénombrer Escherichia coli dans l'eau de mer, un

Water quality - Enumeration of Escherichia coli and coliform bacteria - Part 2 : most probable number method

DIN EN ISO 17994:2014 水质. 采用双定量法比较微生物相对回收率的要求(ISO 17994-2014); 德文版本EN ISO 17994-2014

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

DIN EN ISO 9308-2:2014 水质. 大肠杆菌和大肠菌群的计数. 第2部分: 最确数法(ISO 9308-2-2012); 德文版本EN ISO 9308-2-2014

Water quality - Enumeration of Escherichia coli and coliform bacteria - Part 2: Most probable number method (ISO 9308-2:2012); German version EN ISO 9308-2:2014

EN ISO 9308-2:2014 水质.大肠杆菌的检测与计数.第2部分:最确数法(ISO 9308-2:2012)

Dieser Teil von ISO 9308 legt ein Verfahren fur die Zahlung von E. coli und coliformen Bakterien in Wasser fest. Das Verfahren beruht auf der Vermehrung von Zielorganismen in einem flussigen Medium und der Berechnung der "wahrscheinlichsten Keimzahl" (en: Most Probable Number, MPN) von Organismen unter Bezugnahme auf MPN-Tabellen. Dieses Verfahren kann auf alle Arten von Wasser angewendet werden, einschlieslich derer, die eine betrachtliche Menge an Schwebstoffen und eine hohe Keimzahl heterotropher Begleitbakterien enthalten. Es darf jedoch nicht zur Zahlung coliformer Bakterien in Meerwasser angewendet werden. Wird das Verfahren zur Zahlung von E. coli in Meerwasser eingesetzt, ist ublicherweise eine Verdunnung in sterilem Wasser von 1:10 erforderlich, obgleich das Verfahren nachweislich mit einigen Meerwassern gut funktioniert, die eine niedrigere als die ubliche Salzkonzentration aufweisen. Wenn keine Daten zur Unterstutzung der Anwendung des Verfahrens ohne Verdunnung vorliegen, wird eine 1:10-Verdunnung verwendet. Dieses Verfahren stutzt sich auf den Nachweis von E. coli auf der Grundlage der Expression des EnzymsD-Glucuronidase und folglich werden viele der enterohamorrhagischen Stamme von E. coli nicht nachgewiesen, die dieses Enzym ublicherweise nicht exprimieren. Auserdem gib es eine geringe Anzahl anderer E. coli-Stamme, die -D-Glucuronidase nicht exprimieren. Die Auswahl der zum Nachweis und zur Bestatigung der coliformen Gruppe von Bakterien, einschlieslich E. coli, angewendeten Untersuchungen kann als Teil einer kontinuierlichen Abfolge angesehen werden. Der Umfang der Bestatigung hangt bei einer bestimmten Probe teils von der Beschaffenheit des Wassers und teils von den Grunden fur die Untersuchung ab. Die in diesem Teil von ISO 9308 beschriebene Untersuchung liefert ein bestatigtes Ergebnis ohne dass eine weitere Bestatigung positiver Vertiefungen erforderlich ist. ANMERKUNG Wahrend in dem Verfahren die Anwendung einer handelsublichen Zahlvorrichtung

Water quality - Enumeration of Escherichia coli and coliform bacteria - Part 2: Most probable number method

BS EN ISO 17994:2014 水质. 用两种定量方法对比微生物回收率的基本要求

Water quality. Requirements for the comparison of the relative recovery of microorganisms by two quantitative method

EN ISO 17994:2014 水质.通过两种定量方法得出微生物相对恢复的比较要求(ISO 17994:2014)

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

Water quality - Requirements for the comparison of the relative recovery of microorganisms by two quantitative methods

BS EN ISO 14189:2016 水质 产气荚膜梭菌计数 使用膜过滤的方法

What is ISO 14189 – Water quality about?    ISO 14189 is an international standard that focuses on the enumeration of clostridium perfringens.  Water quality has a significant impact on  water supply  and oftentimes determines supply options. ISO 14189 specifies a method for the enumeration of vegetative cells and spores of Clostridium perfringens by the membrane filtration method in samples of water intended for human consumption. ISO 14189 can be applied to all types of water samples provided they do not contain particulate or colloidal matter that interferes with filtration.   Who is ISO 14189 – Water quality for?   ISO 14189 on the enumeration of clostridium perfringens is useful for:   Water suppl...

Water quality. Enumeration of Clostridium perfringens. Method using membrane filtration

ISO 14189:2013 水质.产气荚膜梭菌的枚举.使用膜过滤法

This International Standard specifies a method for the enumeration of vegetative cells and spores of Clostridium perfringens by the membrane filtration method in samples of water intended for human consumption. However, the method can be applied to all types of water samples provided they do not contain particulate or colloidal matter that interferes with filtration.

Water quality.Enumeration of Clostridium perfringens.Method using membrane filtration

NF T90-435*NF EN ISO 19250:2013 水质 - 沙门氏菌属的检测

Water quality - Detection of Salmonella spp

DIN EN ISO 19250:2013 水质. 沙门氏菌属的检测 (ISO 19250-2010); 德文版本EN ISO 19250-2013

Water quality - Detection of Salmonella spp. (ISO 19250:2010); German version EN ISO 19250:2013

DS/EN ISO 19250:2013 水质 沙门氏菌属的检测

ISO 19250:2010 specifies a method for the detection of Salmonella spp. (presumptive or confirmed) in water samples. It is possible that, for epidemiological purposes or during outbreak investigations, other media are also required.

Water quality - Detection of Salmonella spp.

GSO ISO 10705-2:2013 水质 细菌检测和计数 第2部分 体细胞噬菌体普查

This part of ISO 10705 specifies a method for the detection and enumeration of somatic coliphages by incubating the sample with an appropriate host strain. The method is applicable to all kinds of water, sediments and sludge extracts, where necessary after dilution. The method is also applicable to shellfish extracts. In the case of low phage numbers, a preconcentration step may be necessary for which a separate International Standard will be developed. NOTE It is desirable for International Standards to be adopted as widely as possible. This part of ISO 10705 includes reference to alternative procedures which obviate the need for expensive materials or equipment which may not be readily available in developing countries. Use of these alternatives will not affect the performance of this method.

Water quality -- Detection and enumeration of bacteriophages -- Part 2: Enumeration of somatic coliphages

GSO ISO 9308-2:2013 水质 大肠杆菌和大肠菌群计数 第2部分：最可能数法

Abstract ISO 9308-2:2012 specifies a method for the enumeration of E. coli and coliform bacteria in water. The method is based on the growth of target organisms in a liquid medium and calculation of the "Most Probable Number" (MPN) of organisms by reference to MPN tables. This method can be applied to all types of water, including those containing an appreciable amount of suspended matter and high background counts of heterotrophic bacteria. However it must not be used for the enumeration of coliform bacteria in marine water. When using for the enumeration of E. coli in marine waters, a 1→10 dilution in sterile water is typically required, although the method has been shown to work well with some marine waters that have a lower than normal concentration of salts. In the absence of data to support the use of the method without dilution, a 1→10 dilution is used. This method relies upon the detection of E. coli based upon expression of the enzyme b‑D‑glucuronidase and consequently does not detect many of the enterohaemorhagic strains of E. coli, which do not typically express this enzyme. Additionally, there are a small number of other E. coli strains that do not express b‑D‑glucuronidase. The choice of tests used in the detection and confirmation of the coliform group of bacteria, including E. coli, can be regarded as part of a continuous sequence. The extent of confirmation with a particular sample depends partly on the nature of the water and partly on the reasons for the examination. The test described in ISO 9308-2:2012 provides a confirmed result with no requirement for further confirmation of positive wells.

Water quality -- Enumeration of Escherichia coli and coliform bacteria -- Part 2: Most probable number method

GSO ISO 10705-1:2013 水质细菌检测和计数 第1部分F型RNA细菌计数

This part of IS0 10705 specifies a method for the detection and enumeration of F-specific ribonucleic acid (RNA) bacteriophages by incubating the sample with an appropriate host strain. The method can be applied to all kinds of water, sediments and sludges, where necessary after dilution. In the case of low numbers, a preconcentration step may be necessary for which a separate part of IS0 10705 will be developed. The method can also be applied to shellfish extracts. Depending on the relative abundance of Fspecific RNA bacteriophages to background organisms, additional confirmatory tests may be necessary and are also specified in this part of IS0 10705. The presence of F-specific RNA bacteriophages in a water sample generally indicates pollution by wastewater contaminated by human or animal faeces. Their survival in the environment, removal by widely used water treatment processes and concentration or retention by shellfish resembles that of foodborne and waterborne human enteric viruses, for example the enteroviruses, hepatitis A virus and rotaviruses.

Water quality -- Detection and enumeration of bacteriophages -- Part 1: Enumeration of F-specific RNA bacteriophages

GSO ISO 15553:2013 水质 水中隐孢子虫和贾第鞭毛虫包囊的分离和鉴定

This International Standard specifies a method that is applicable for the detection and enumeration of Cryptosporidium oocysts and Giardia cysts in water. It is applicable for the examination of surface and ground waters, treated waters, mineral waters, swimming pool and recreational waters. This method does not allow identification to species level, the host species of origin or the determination of viability or infectivity of any Cryptosporidium oocyst or Giardia cyst which may be present. These procedures are for use by experienced analysts who have successfully completed competency tests prior to commencing analysis. In addition, such analysts should continue to demonstrate competency by examining seeded samples at regular intervals and taking part in external quality assurance schemes. NOTE Bodies resembling Cryptosporidium or Giardia in morphology can be present and these may be mistaken for oocysts or cysts. Results should be interpreted with care. Where there is doubt about the identity of oocysts or cysts or where an unusually high result is obtained, it is advisable to have the slides examined by experts from other laboratories to confirm or refute the findings.

Water quality – Isolation and identification of Cryptosporidium oocysts and Giardia cysts from water

GSO ISO 10705-3:2013 水质细菌检测和计数 第3部分水中细菌浓度的验证方法

This part of ISO 10705 specifies the general principles for assessing the performance of methods for the concentration of bacteriophages from water. Concentration is recommended for those water samples expected to contain < 3 pfp (plaque-forming particles) per millilitre. Concentration methods can be applied to all kinds of water provided that the amount and nature of suspended solids and/or dissolved matter do not interfere with the concentration procedure. This part of ISO 10705 does not give specific details of concentration methods, but outlines the fundamental principles for evaluating the suitability of a particular method for a given type and volume of water. Annex A gives examples of methods that have been found satisfactory and their fields of application

Water quality -- Detection and enumeration of bacteriophages -- Part 3: Validation of methods for concentration of bacteriophages from water

GSO ISO 7899-2:2013 水质肠球菌检测与计数 第2部分：膜过滤法

This part of ISO 7899 specifies a method for the detection and enumeration of intestinal enterococci in water by membrane filtration. This part of ISO 7899 is especially intended for examination of drinking water, water from swimming pools and other disinfected or clean waters. Nevertheless, the method can be applied to all types of water, except when a large amount of suspended matter or many interfering microorganisms are present. It is particularly suitable for the examination of large volumes of water containing only a few intestinal enterococci.

Water quality - Detection and enumeration of intestinal enterococci - Part 2: Membrane filtration method

EN ISO 19250:2013 水质.沙门氏菌属的检测

Diese Internationale Norm legt ein Verfahren zum Nachweis von Salmonella spp. (prasumtiv oder bestatigt) in Wasserproben fest. Es ist moglich, dass bei besonderen epidemiologischen Situationen oder bei Untersuchungen von Krankheitsausbruchen auch andere Medien benotigt werden. WARNUNG - Es ist moglich, dass das Verfahren nicht alle Salmonella ser. Typhi und ser. Paratyphi erfasst. ANMERKUNG Fur eine semi-quanitative Untersuchung konnen MPN-Ansatze (en: most probable number - wahrscheinlichste Zahl) unter Verwendung geeigneter Probenvolumen durchgefuhrt werden. Fur diese Falle wird das Volumen des gepufferten Peptonwassers entsprechend angepasst.

Water quality - Detection of Salmonella spp.

GSO ISO 10705-4:2013 水质细菌检测和计数 第4部分脆弱拟杆菌感染细菌计数

This part of ISO 10705 specifies a method for the detection and enumeration of bacteriophages infecting Bacteroides fragilis by incubating the sample with an appropriate host-strain. The method is applicable to all kinds of water, sediments and sludge extracts, where necessary after dilution. In the case of low phage numbers, a preconcentration step may be necessary for which a separate International Standard has been developed. The method is also applicable to shellfish extracts. NOTE It is desirable for International Standards to be adopted as widely as possible. This part of ISO 10705 includes reference to alternative procedures which obviate the need for expensive materials or equipment which may not be readily available in developing countries. Use of these alternatives will not affect the performance of this method.

Water quality -- Detection and enumeration of bacteriophages -- Part 4: Enumeration of bacteriophages infecting Bacteroides fragilis