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ISO 16265:2009

Current
Current

The latest, up-to-date edition.

Water quality Determination of the methylene blue active substances (MBAS) index Method using continuous flow analysis (CFA)
Available format(s)

Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users

Language(s)

English, French

Published date

03-03-2009

ISO 16265:2009 specifies a procedure for the determination of the methylene blue active substances (MBAS) index, in the ranges 0,05 mg/l to 0,5 mg/l and 0,5 mg/l to 5,0 mg/l, in various water samples (e.g. ground water, drinking water, surface water, waste water and leachates). Anionic surfactants are the most important substances showing methylene blue activity. This method is therefore useful for estimating the anionic surfactant content [including anionic surfactants with carboxylate groups (e.g. soaps)] of water. Other types of substance may also show methylene blue activity and contribute to the result. On a case-by-case basis, the range of the analysis may be changed and the method used for other concentration ranges provided they cover exactly one decade of concentration units.

DevelopmentNote
Supersedes ISO/DIS 16265. (03/2009)
DocumentType
Standard
Pages
11
PublisherName
International Organization for Standardization
Status
Current

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