NBN ISO 18191:2019

NBN ISO 18191:2019

Water quality - Determination of pHt in sea water - Method using the indicator dye m-cresol purple ISO 18191:2015

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Details

This International Standard 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.
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Additional Info

Author Bureau de Normalisation Belge (NBN)
Published by NBN
Document type Standard
ICS 13.060.50 : Examination of water for chemical substances
Document history No
Keyword ISO 18191, ISO 18191:2019
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