Abstract 

The method specified (using a pH-meter) is applicable to all types of water and waste water samples in the range from pH 3 to pH 10. The temperature, some gases and organic materials interfere with the pH-measurement. Suspended materials in the sample may cause significant errors. When measuring sewage and some surface waters, there is a particularly high risk of smearing the electrodes or contaminating the membranes and diaphragm with oil, grease or other contaminants.


General information

  • Status :  Withdrawn
    Publication date : 1994-07
  • Edition : 1
  • :
    ISO/TC 147/SC 2
    Physical, chemical and biochemical methods
  • 13.060.50
    Examination of water for chemical substances

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