ISO/IEC 17025:2017 specifies the general requirements for the competence, impartiality and consistent operation of laboratories.
ISO/IEC 17025:2017 is applicable to all organizations performing laboratory activities, regardless of the number of personnel.
Laboratory customers, regulatory authorities, organizations and schemes using peer-assessment, accreditation bodies, and others use ISO/IEC 17025:2017 in confirming or recognizing the competence of laboratories.

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This part of ISO 9308 specifies a method for the enumeration of Escherichia coli (E. coli) and coliform
bacteria. The method is based on membrane filtration, subsequent culture on a chromogenic coliform
agar medium, and calculation of the number of target organisms in the sample. Due to the low selectivity
of the differential agar medium, background growth can interfere with the reliable enumeration of
E. coli and coliform bacteria, for example, in surface waters or shallow well waters. This...
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Migrated from Progress Sheet (TC Comment) (2000-07-10): TC 230 Res. 87: // approval procedure on the revision of ISO 7899-2:1984. ++ N315: New TD (TA/980915)

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