This European Standard specifies the procedure for the determination of phosphorus soluble in 2 % citric acid (20 g/l). The method is applicable only to types of basic slag (see [1], Annex I A).
EN 15920:2011 Referenced Document
EN 12944-1:1999 Fertilizers and Liming Materials - Vocabulary - Part 1: General Terms
EN 12944-2:1999 Fertilizers and Liming Materials - Vocabulary - Part 2: Terms Relating to Fertilizers
EN 1482-2:2007 Fertilizers and liming materials - Sampling and sample preparation - Part 2: Sample preparation
EN 15920:2011 history
2011EN 15920:2011 Fertilizers - Extraction of phosphorus soluble in 2 % citric acid