BH GSO ISO 18191:2022
ISO 18191:2015
Bahraini Standard
Current Edition
·
Approved on
28 April 2022
Water quality — Determination of pHt in sea water — Method using the indicator dye m-cresol purple
BH GSO ISO 18191:2022 Files
English
11 Pages
Current Edition
Reference Language
BHD
30.29
BH GSO ISO 18191:2022 Scope
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.
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