ISO/FDIS 18191:2026
Forthcoming Draft standard
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ISO/FDIS 18191:2026

Water quality — Determination of pHT in sea water — Method using the indicator dye m-cresol purple
Most recent standard

Summary

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.

Notes

40.00 : DIS enregistré

Technical characteristics

Publisher International Organization for Standardization (ISO)
Publication Date 02/02/2026
Edition 2
Page Count 13
EAN ---
ISBN ---
Weight (in grams) ---

Replaces

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