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Hlavní stránka>BS ISO 18191:2015 Water quality. Determination of pH<sub>t</sub> in sea water. Method using the indicator dye <i>m</i>-cresol purple
sklademVydáno: 2015-09-30
BS ISO 18191:2015 Water quality. Determination of pH<sub>t</sub> in sea water. Method using the indicator dye <i>m</i>-cresol purple

BS ISO 18191:2015

Water quality. Determination of pH<sub>t</sub> in sea water. Method using the indicator dye <i>m</i>-cresol purple

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Označení normy:BS ISO 18191:2015
Počet stran:22
Vydáno:2015-09-30
ISBN:978 0 580 79390 5
Status:Standard
Popis

BS ISO 18191:2015


This standard BS ISO 18191:2015 Water quality. Determination of pHt in sea water. Method using the indicator dye m-cresol purple is classified in these ICS categories:
  • 13.060.50 Examination of water for chemical substances

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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