ISO 11731：2017 水中军团菌的检测标准

Water quality - Enumeration of Legionella 
  WARNING - Persons using this document should be familiar with normal laboratory practice. This document does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user of this document to establish appropriate safety and health practices and to ensure compliance with any national regulatory conditions. 
  IMPORTANT - It is absolutely essential that tests conducted in accordance with this document be carried out by suitably qualified and competent staff. 

1 Scope 
  This document 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. 

2 Normative references 
  The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.