ISO/FDIS 18191

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

Опште информације

Trenutna faza: 50.20 Effective date: 30. 3. 2026.

Inicijator: ISO

Pripada: ISO/TC 147/SC 2

Vrsta: Međunarodni standard

Apstrakt

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.

Životni ciklus

PRETHODNO

OBJAVLJEN
ISO 18191:2015

TRENUTNO

PROJEKAT
ISO/FDIS 18191
50.20 Početak postupka odobravanja definitivnog teksta nacrta standarda
30. 3. 2026.

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