ISO 5310:1986
The method consists in precipitating of potassium ions by an excess of sodium tetraphenylborate (NaTPB) in a weakly alkaline medium, filtrating and determing of the unused NaTPB by back titration with cetyltrimethylammoniumbromide solution. The test solution shall be prepared as specified in ISO 5317 or ISO 7407.
SDO:
ISO
Language:
English
ICS Codes:
65.080
Status:
Withdrawn
Publish date:
1986-12-17
Standard Number:
ISO 5310:1986