NEN 6261:1990
Superseded
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Bacteriological Examination of Water - Membrane Filtration Study of the Presence and Number of Colony Forming Units (CFU) of Escherichia coli
Amended by
Published date
01-06-1990
Publisher
Superseded date
02-03-2026
Superseded by
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This standard provides a method for detecting and quantifying Escherichia coli by filtering a water sample through a membrane filter, resuscitation of filtered germs on a solid, non-selective culture medium and culture on a solid selective culture medium, after which differentiation of formed colonies takes place by means of investigation for the presence of indole.
| DocumentType |
Standard
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| ProductNote |
New child AMD 1 2002 is now added
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| PublisherName |
Netherlands Standards
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| Status |
Superseded
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| SupersededBy |
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