Reference number
ISO 18191:2015
© ISO 2025
International Standard
ISO 18191:2015
Water quality — Determination of pHt in sea water — Method using the indicator dye m-cresol purple
Edition 1
2015-09
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Published (Edition 1, 2015)
This publication was last reviewed and confirmed in 2020. Therefore this version remains current.

ISO 18191:2015

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Format
CHF 65
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Abstract

ISO 18191:2015 specifies a spectrophotometric determination of the pHt of sea water on the total hydrogen ion concentration pH scale using the indicator dye m-cresol purple. The total hydrogen ion concentration, [H+]t, is expressed as moles per kilogram of sea water. The method is suitable for assaying oceanic levels of pHt 7,4 to 8,2 for normal sea water of practical salinity ranging from 20 to 40.

General information

  • Status
     : Published
    Publication date
     : 2015-09
    Stage
    : International Standard to be revised [90.92]
  • Edition
     : 1
    Number of pages
     : 11
  • Technical Committee :
    ISO/TC 147/SC 2
    ICS :
    13.060.50 
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Life cycle

Sustainable Development Goals

This standard contributes to the following Sustainable Development Goal

14
Life Below Water

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