07.100.20 水的微生物学 标准查询与下载



共找到 429 条与 水的微生物学 相关的标准,共 29

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

ICS
07.100.20
CCS
发布
2013-04-01
实施

This International Standard 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.

ICS
07.100.20
CCS
发布
2013-04-01
实施

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

ICS
07.100.20
CCS
发布
2013-04-01
实施

Abstract Gives a procedure for the evaluation and comparison of water-testing filters intended for the enumeration of specific organisms and mixed microbial populations. The procedure provides general guidelines for comparative testing of the recoveries of bacteria, yeasts and other fungi on membrane filters, as compared to recoveries by the spread plate and pour plate techniques.

Water quality -- Evaluation of membrane filters used for microbiological analyses

ICS
07.100.20
CCS
发布
2013-04-01
实施

This part of ISO 9308 specifies a miniaturized method for the detection and enumeration of Escherichia coli (E. coli) in surface and waste water by inoculation in a liquid medium. The method is applicable to all types of surface and waste waters, particularly those rich in suspended matter. This method is not suitable for drinking water and any other type of water for which the guideline is less than 15 counts per 100 ml. This method is not appropriate for enumeration and detection of coliform bacteria other than E. coli.

Water quality - Detection and enumeration of Escherichia coli and coliform bacteria - Part 3: Miniaturized method (Most Probable Number) for the detection and enumeration of E. coli in surface and waste water

ICS
07.100.20
CCS
发布
2013-04-01
实施

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

ICS
07.100.20
CCS
发布
2013-04-01
实施

Drinking water. Detection and enumeration of Escherichia coli and coliform bacteria. Part 1. Membrane filtration method

ICS
07.100.20
CCS
发布
2013
实施
2014-01-01

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

ICS
07.100.20
CCS
发布
2012-11-16
实施
2012-11-16

Water quality - Detection and quantification of Legionella spp. and/or Legionella pneumophila by concentration and genic amplification by quantitative polymerase chain reaction (qPCR)

ICS
07.100.20
CCS
Z16
发布
2012-11
实施

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

ICS
07.100.20
CCS
Z16
发布
2012-07
实施

Water quality. Enumeration of Escherichia coli and coliform bacteria. Most probable number method

ICS
07.100.20
CCS
Z16
发布
2012-06-30
实施
2012-06-30

Drinking water. Detection and enumeration of Escherichia coli and coliform bacteria. Part 1. Membrane filtration method

ICS
07.100.20
CCS
发布
2012
实施
2014-01-01

This procedure may be used to assess the in vitro reduction of a microbial population of test organisms after exposure to a test material.1.1 This test method measures the changes of a population of aerobic and anaerobic microorganisms within a specific sampling time when tested against antimicrobial test materials in vitro. The organisms used are standardized as to growth requirements and inoculum preparation and must grow under the conditions of the test. The primary purpose of this test method is to provide a set of standardized conditions and test organisms to facilitate comparative assessments of antimicrobial materials miscible in aqueous systems. 1.2 This test method allows the option of using a test sample size of 10 mL or 100 mL. 1.3 Knowledge of microbiological techniques is required for this procedure. 1.4 Aseptic technique should be practiced at all times. 1.5 In this test method, SI units are used for all applications, except for distance in which case inches are used and SI units follow in parentheses. 1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Standard Test Method for Assessment of Antimicrobial Activity for Water Miscible Compounds Using a Time-Kill Procedure

ICS
07.100.20
CCS
发布
2011-10-01
实施

5.1 This procedure may be used to assess the in vitro reduction of a microbial population of test organisms after exposure to a test material. 1.1 This test method measures the changes of a population of aerobic and anaerobic microorganisms within a specific sampling time when tested against antimicrobial test materials in vitro. The organisms used are standardized as to growth requirements and inoculum preparation and must grow under the conditions of the test. The primary purpose of this test method is to provide a set of standardized conditions and test organisms to facilitate comparative assessments of antimicrobial materials miscible in aqueous systems. 1.2 This test method allows the option of using a test sample size of 10 mL or 100 mL. 1.3 Knowledge of microbiological techniques is required for this procedure. 1.4 Aseptic technique should be practiced at all times. 1.5 In this test method, SI units are used for all applications, except for distance in which case inches are used and SI units follow in parentheses. 1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Standard Test Method for Assessment of Antimicrobial Activity for Water Miscible Compounds Using a Time-Kill Procedure

ICS
07.100.20
CCS
发布
2011
实施

Water quality - Criteria for establishing equivalence between microbiological methods

ICS
07.100.20
CCS
发布
2011
实施

Water quality - Guidance on validation of microbiological methods

ICS
07.100.20
CCS
发布
2011
实施

Water quality-Detection and enumeration of Escherichia coli and coliform bacteria-Part 1:Membrane filtration method

ICS
07.100.20
CCS
发布
2010-11-02
实施

Water quality-Detection and enumeration of faecal streptococci-Part 2:Method by membrane filtration

ICS
07.100.20
CCS
发布
2010-11-02
实施

Water quality. Detection of Salmonella spp

ICS
07.100.20
CCS
Z16
发布
2010-09-30
实施
2010-09-30

Water quality-Detection and enumeration of coliform organisms,thermotolerant coliform organisms and presumptive Escherichia coli-Part 2:Multiple tube(most probable number) method

ICS
07.100.20
CCS
发布
2010-07-27
实施



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