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ISO 5310:1986

Fertilizers — Determination of potassium content — Titrimetric method ISO 5310:1986

Publication date:   Dec 18, 1986

95.99   Withdrawal of Standard   Mar 6, 2007

General information

95.99   Withdrawal of Standard   Mar 6, 2007

ISO

ISO/TC 134 Fertilizers, soil conditioners and beneficial substances

International Standard

65.080   Fertilizers

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Scope

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.

Life cycle

NOW

WITHDRAWN
ISO 5310:1986
95.99 Withdrawal of Standard
Mar 6, 2007




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