ISO 15959:2016

Current Revision
Fertilizers - Determination of extracted phosphorus

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ISO 15959:2016

Fertilizers - Determination of extracted phosphorus

PUBLISH DATE 2016
ISO 15959:2016

ISO 15959:2016 specifies a method for the determination of phosphorus in fertilizer extracts.

The method is applicable to all extracts of fertilizers for the determination of the different forms of phosphorus, including:

  • phosphorus soluble in mineral acids,
  • water soluble phosphorus,
  • phosphorus soluble in solutions of ammonium citrate,
  • phosphorus soluble in 2 % citric acid, and
  • phosphorus soluble in 2 % formic acid.
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