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ISO 18191:2026

Current

Current

The latest, up-to-date edition.

Water quality — Determination of pHT in seawater — Method using the indicator dye m-cresol purple

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

07-07-2026

£93.00
Excluding VAT

This document specifies a spectrophotometric determination of the pHT of seawater on the total hydrogen ion concentration pH scale. The total hydrogen ion concentration, [H+]T, is expressed as moles per kilogram of seawater. The method is suitable for assaying oceanic levels ofpHT from7,4 to8,2 for normal seawater of practical salinity ranging from 20 to 40.

Committee
ISO/TC 147/SC 2
DocumentType
Standard
Pages
13
PublisherName
International Organization for Standardization
Status
Current
Supersedes

£93.00
Excluding VAT