EN ISO 11731:2017
Current
The latest, up-to-date edition.
Water quality - Enumeration of Legionella (ISO 11731:2017)
07-06-2017
European foreword
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Apparatus and glassware
6 Culture media and reagents
7 Sampling
8 Procedure
9 Expression of results
10 Test report
11 Quality assurance
Annex A (informative) - Legionella species
Annex B (normative) - Culture media
Annex C (normative) - Diluents
Annex D (normative) - Acid solution
Annex E (informative) - Scraping or rubbing the
bacteria from membrane filters
Annex F (informative) - Centrifugation technique
Annex G (informative) - Indirect immunofluorescent
antibody assay for the identification of Legionella
species
Annex H (informative) - Performance data
Annex I (informative) - Pre-treatment of water related
matrices
Annex J (normative) - Decision matrix
Bibliography
ISO 11731:2017 specifies culture methods for the isolation of Legionella and estimation of their numbers in water samples.These methods are applicable to all kinds of water samples including potable, industrial, waste and natural waters. These methods can be used for water related matrices, e.g. biofilms, sediments, etc.Not all Legionella species are culturable; therefore, the methods described in this document do not recover all species of Legionella.
| Committee |
CEN/TC 230
|
| DevelopmentNote |
Supersedes EN ISO 11731-2. (06/2017)
|
| DocumentType |
Standard
|
| PublisherName |
Comite Europeen de Normalisation
|
| Status |
Current
|
| Supersedes |
| Standards | Relationship |
| DIN EN ISO 11731:2019-03 | Identical |
| NF EN ISO 11731 : 2017 | Identical |
| ONORM EN ISO 11731 : 2018 | Identical |
| UNE-EN ISO 11731:2017 | Identical |
| DIN EN ISO 11731:2015-12 (Draft) | Identical |
| UNI EN ISO 11731 : 2017 | Identical |
| PN-EN ISO 11731:2017-08 | Identical |
| BS EN ISO 11731:2017 | Identical |
| ISO 11731:2017 | Identical |
| I.S. EN ISO 11731:2017 | Identical |
| NEN EN ISO 11731 : 2017 | Identical |
| SN EN ISO 11731 : 2017 | Identical |
| NS EN ISO 11731 : 2017 | Identical |
| SS-EN ISO 11731:2017 | Identical |
| DIN EN ISO 11731:2018-03 | Identical |
| 17/30362689 DC : 0 | BS EN 16941-2 - ON-SITE NON-POTABLE WATER SYSTEMS - PART 2: SYSTEMS FOR THE USE OF TREATED GREYWATER |
| ISO/IEC 17025:2005 | General requirements for the competence of testing and calibration laboratories |
| ISO 7704:1985 | Water quality — Evaluation of membrane filters used for microbiological analyses |
| ISO 19458:2006 | Water quality Sampling for microbiological analysis |
| ISO 8199:2005 | Water quality General guidance on the enumeration of micro-organisms by culture |
| ISO 13843:2017 | Water quality — Requirements for establishing performance characteristics of quantitative microbiological methods |
| ISO 11133:2014 | Microbiology of food, animal feed and water — Preparation, production, storage and performance testing of culture media |
| ISO 3696:1987 | Water for analytical laboratory use — Specification and test methods |
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