ISO 18191:2015 (R2020)
Active , Reaffirmed Standard
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ISO 18191:2015 (R2020)

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

90.92 : Norme internationale à réviser

Technical characteristics

Publisher International Organization for Standardization (ISO)
Publication Date 09/01/2015
Confirmation Date 12/16/2020
Edition 1
Page Count 11
EAN ---
ISBN ---
Weight (in grams) ---
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