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.
Status: WithdrawnPublication date: 1994-07
Edition: 1Number of pages: 10
Technical Committee: ISO/TC 147/SC 2 Physical, chemical and biochemical methods
- ICS :
- 13.060.50 Examination of water for chemical substances
ISO 10523:1994Stage: 95.99
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